diff options
Diffstat (limited to 'kernel/drivers/scsi/bfa/bfa_fcpim.c')
| -rw-r--r-- | kernel/drivers/scsi/bfa/bfa_fcpim.c | 3936 |
1 files changed, 3936 insertions, 0 deletions
diff --git a/kernel/drivers/scsi/bfa/bfa_fcpim.c b/kernel/drivers/scsi/bfa/bfa_fcpim.c new file mode 100644 index 000000000..d7385d1d9 --- /dev/null +++ b/kernel/drivers/scsi/bfa/bfa_fcpim.c @@ -0,0 +1,3936 @@ +/* + * Copyright (c) 2005-2010 Brocade Communications Systems, Inc. + * All rights reserved + * www.brocade.com + * + * Linux driver for Brocade Fibre Channel Host Bus Adapter. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License (GPL) Version 2 as + * published by the Free Software Foundation + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + */ + +#include "bfad_drv.h" +#include "bfa_modules.h" + +BFA_TRC_FILE(HAL, FCPIM); + +/* + * BFA ITNIM Related definitions + */ +static void bfa_itnim_update_del_itn_stats(struct bfa_itnim_s *itnim); +static void bfa_ioim_lm_init(struct bfa_s *bfa); + +#define BFA_ITNIM_FROM_TAG(_fcpim, _tag) \ + (((_fcpim)->itnim_arr + ((_tag) & ((_fcpim)->num_itnims - 1)))) + +#define bfa_fcpim_additn(__itnim) \ + list_add_tail(&(__itnim)->qe, &(__itnim)->fcpim->itnim_q) +#define bfa_fcpim_delitn(__itnim) do { \ + WARN_ON(!bfa_q_is_on_q(&(__itnim)->fcpim->itnim_q, __itnim)); \ + bfa_itnim_update_del_itn_stats(__itnim); \ + list_del(&(__itnim)->qe); \ + WARN_ON(!list_empty(&(__itnim)->io_q)); \ + WARN_ON(!list_empty(&(__itnim)->io_cleanup_q)); \ + WARN_ON(!list_empty(&(__itnim)->pending_q)); \ +} while (0) + +#define bfa_itnim_online_cb(__itnim) do { \ + if ((__itnim)->bfa->fcs) \ + bfa_cb_itnim_online((__itnim)->ditn); \ + else { \ + bfa_cb_queue((__itnim)->bfa, &(__itnim)->hcb_qe, \ + __bfa_cb_itnim_online, (__itnim)); \ + } \ +} while (0) + +#define bfa_itnim_offline_cb(__itnim) do { \ + if ((__itnim)->bfa->fcs) \ + bfa_cb_itnim_offline((__itnim)->ditn); \ + else { \ + bfa_cb_queue((__itnim)->bfa, &(__itnim)->hcb_qe, \ + __bfa_cb_itnim_offline, (__itnim)); \ + } \ +} while (0) + +#define bfa_itnim_sler_cb(__itnim) do { \ + if ((__itnim)->bfa->fcs) \ + bfa_cb_itnim_sler((__itnim)->ditn); \ + else { \ + bfa_cb_queue((__itnim)->bfa, &(__itnim)->hcb_qe, \ + __bfa_cb_itnim_sler, (__itnim)); \ + } \ +} while (0) + +enum bfa_ioim_lm_ua_status { + BFA_IOIM_LM_UA_RESET = 0, + BFA_IOIM_LM_UA_SET = 1, +}; + +/* + * itnim state machine event + */ +enum bfa_itnim_event { + BFA_ITNIM_SM_CREATE = 1, /* itnim is created */ + BFA_ITNIM_SM_ONLINE = 2, /* itnim is online */ + BFA_ITNIM_SM_OFFLINE = 3, /* itnim is offline */ + BFA_ITNIM_SM_FWRSP = 4, /* firmware response */ + BFA_ITNIM_SM_DELETE = 5, /* deleting an existing itnim */ + BFA_ITNIM_SM_CLEANUP = 6, /* IO cleanup completion */ + BFA_ITNIM_SM_SLER = 7, /* second level error recovery */ + BFA_ITNIM_SM_HWFAIL = 8, /* IOC h/w failure event */ + BFA_ITNIM_SM_QRESUME = 9, /* queue space available */ +}; + +/* + * BFA IOIM related definitions + */ +#define bfa_ioim_move_to_comp_q(__ioim) do { \ + list_del(&(__ioim)->qe); \ + list_add_tail(&(__ioim)->qe, &(__ioim)->fcpim->ioim_comp_q); \ +} while (0) + + +#define bfa_ioim_cb_profile_comp(__fcpim, __ioim) do { \ + if ((__fcpim)->profile_comp) \ + (__fcpim)->profile_comp(__ioim); \ +} while (0) + +#define bfa_ioim_cb_profile_start(__fcpim, __ioim) do { \ + if ((__fcpim)->profile_start) \ + (__fcpim)->profile_start(__ioim); \ +} while (0) + +/* + * IO state machine events + */ +enum bfa_ioim_event { + BFA_IOIM_SM_START = 1, /* io start request from host */ + BFA_IOIM_SM_COMP_GOOD = 2, /* io good comp, resource free */ + BFA_IOIM_SM_COMP = 3, /* io comp, resource is free */ + BFA_IOIM_SM_COMP_UTAG = 4, /* io comp, resource is free */ + BFA_IOIM_SM_DONE = 5, /* io comp, resource not free */ + BFA_IOIM_SM_FREE = 6, /* io resource is freed */ + BFA_IOIM_SM_ABORT = 7, /* abort request from scsi stack */ + BFA_IOIM_SM_ABORT_COMP = 8, /* abort from f/w */ + BFA_IOIM_SM_ABORT_DONE = 9, /* abort completion from f/w */ + BFA_IOIM_SM_QRESUME = 10, /* CQ space available to queue IO */ + BFA_IOIM_SM_SGALLOCED = 11, /* SG page allocation successful */ + BFA_IOIM_SM_SQRETRY = 12, /* sequence recovery retry */ + BFA_IOIM_SM_HCB = 13, /* bfa callback complete */ + BFA_IOIM_SM_CLEANUP = 14, /* IO cleanup from itnim */ + BFA_IOIM_SM_TMSTART = 15, /* IO cleanup from tskim */ + BFA_IOIM_SM_TMDONE = 16, /* IO cleanup from tskim */ + BFA_IOIM_SM_HWFAIL = 17, /* IOC h/w failure event */ + BFA_IOIM_SM_IOTOV = 18, /* ITN offline TOV */ +}; + + +/* + * BFA TSKIM related definitions + */ + +/* + * task management completion handling + */ +#define bfa_tskim_qcomp(__tskim, __cbfn) do { \ + bfa_cb_queue((__tskim)->bfa, &(__tskim)->hcb_qe, __cbfn, (__tskim));\ + bfa_tskim_notify_comp(__tskim); \ +} while (0) + +#define bfa_tskim_notify_comp(__tskim) do { \ + if ((__tskim)->notify) \ + bfa_itnim_tskdone((__tskim)->itnim); \ +} while (0) + + +enum bfa_tskim_event { + BFA_TSKIM_SM_START = 1, /* TM command start */ + BFA_TSKIM_SM_DONE = 2, /* TM completion */ + BFA_TSKIM_SM_QRESUME = 3, /* resume after qfull */ + BFA_TSKIM_SM_HWFAIL = 5, /* IOC h/w failure event */ + BFA_TSKIM_SM_HCB = 6, /* BFA callback completion */ + BFA_TSKIM_SM_IOS_DONE = 7, /* IO and sub TM completions */ + BFA_TSKIM_SM_CLEANUP = 8, /* TM cleanup on ITN offline */ + BFA_TSKIM_SM_CLEANUP_DONE = 9, /* TM abort completion */ + BFA_TSKIM_SM_UTAG = 10, /* TM completion unknown tag */ +}; + +/* + * forward declaration for BFA ITNIM functions + */ +static void bfa_itnim_iocdisable_cleanup(struct bfa_itnim_s *itnim); +static bfa_boolean_t bfa_itnim_send_fwcreate(struct bfa_itnim_s *itnim); +static bfa_boolean_t bfa_itnim_send_fwdelete(struct bfa_itnim_s *itnim); +static void bfa_itnim_cleanp_comp(void *itnim_cbarg); +static void bfa_itnim_cleanup(struct bfa_itnim_s *itnim); +static void __bfa_cb_itnim_online(void *cbarg, bfa_boolean_t complete); +static void __bfa_cb_itnim_offline(void *cbarg, bfa_boolean_t complete); +static void __bfa_cb_itnim_sler(void *cbarg, bfa_boolean_t complete); +static void bfa_itnim_iotov_online(struct bfa_itnim_s *itnim); +static void bfa_itnim_iotov_cleanup(struct bfa_itnim_s *itnim); +static void bfa_itnim_iotov(void *itnim_arg); +static void bfa_itnim_iotov_start(struct bfa_itnim_s *itnim); +static void bfa_itnim_iotov_stop(struct bfa_itnim_s *itnim); +static void bfa_itnim_iotov_delete(struct bfa_itnim_s *itnim); + +/* + * forward declaration of ITNIM state machine + */ +static void bfa_itnim_sm_uninit(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event); +static void bfa_itnim_sm_created(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event); +static void bfa_itnim_sm_fwcreate(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event); +static void bfa_itnim_sm_delete_pending(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event); +static void bfa_itnim_sm_online(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event); +static void bfa_itnim_sm_sler(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event); +static void bfa_itnim_sm_cleanup_offline(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event); +static void bfa_itnim_sm_cleanup_delete(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event); +static void bfa_itnim_sm_fwdelete(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event); +static void bfa_itnim_sm_offline(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event); +static void bfa_itnim_sm_iocdisable(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event); +static void bfa_itnim_sm_deleting(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event); +static void bfa_itnim_sm_fwcreate_qfull(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event); +static void bfa_itnim_sm_fwdelete_qfull(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event); +static void bfa_itnim_sm_deleting_qfull(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event); + +/* + * forward declaration for BFA IOIM functions + */ +static bfa_boolean_t bfa_ioim_send_ioreq(struct bfa_ioim_s *ioim); +static bfa_boolean_t bfa_ioim_sgpg_alloc(struct bfa_ioim_s *ioim); +static bfa_boolean_t bfa_ioim_send_abort(struct bfa_ioim_s *ioim); +static void bfa_ioim_notify_cleanup(struct bfa_ioim_s *ioim); +static void __bfa_cb_ioim_good_comp(void *cbarg, bfa_boolean_t complete); +static void __bfa_cb_ioim_comp(void *cbarg, bfa_boolean_t complete); +static void __bfa_cb_ioim_abort(void *cbarg, bfa_boolean_t complete); +static void __bfa_cb_ioim_failed(void *cbarg, bfa_boolean_t complete); +static void __bfa_cb_ioim_pathtov(void *cbarg, bfa_boolean_t complete); +static bfa_boolean_t bfa_ioim_is_abortable(struct bfa_ioim_s *ioim); + +/* + * forward declaration of BFA IO state machine + */ +static void bfa_ioim_sm_uninit(struct bfa_ioim_s *ioim, + enum bfa_ioim_event event); +static void bfa_ioim_sm_sgalloc(struct bfa_ioim_s *ioim, + enum bfa_ioim_event event); +static void bfa_ioim_sm_active(struct bfa_ioim_s *ioim, + enum bfa_ioim_event event); +static void bfa_ioim_sm_abort(struct bfa_ioim_s *ioim, + enum bfa_ioim_event event); +static void bfa_ioim_sm_cleanup(struct bfa_ioim_s *ioim, + enum bfa_ioim_event event); +static void bfa_ioim_sm_qfull(struct bfa_ioim_s *ioim, + enum bfa_ioim_event event); +static void bfa_ioim_sm_abort_qfull(struct bfa_ioim_s *ioim, + enum bfa_ioim_event event); +static void bfa_ioim_sm_cleanup_qfull(struct bfa_ioim_s *ioim, + enum bfa_ioim_event event); +static void bfa_ioim_sm_hcb(struct bfa_ioim_s *ioim, + enum bfa_ioim_event event); +static void bfa_ioim_sm_hcb_free(struct bfa_ioim_s *ioim, + enum bfa_ioim_event event); +static void bfa_ioim_sm_resfree(struct bfa_ioim_s *ioim, + enum bfa_ioim_event event); +static void bfa_ioim_sm_cmnd_retry(struct bfa_ioim_s *ioim, + enum bfa_ioim_event event); +/* + * forward declaration for BFA TSKIM functions + */ +static void __bfa_cb_tskim_done(void *cbarg, bfa_boolean_t complete); +static void __bfa_cb_tskim_failed(void *cbarg, bfa_boolean_t complete); +static bfa_boolean_t bfa_tskim_match_scope(struct bfa_tskim_s *tskim, + struct scsi_lun lun); +static void bfa_tskim_gather_ios(struct bfa_tskim_s *tskim); +static void bfa_tskim_cleanp_comp(void *tskim_cbarg); +static void bfa_tskim_cleanup_ios(struct bfa_tskim_s *tskim); +static bfa_boolean_t bfa_tskim_send(struct bfa_tskim_s *tskim); +static bfa_boolean_t bfa_tskim_send_abort(struct bfa_tskim_s *tskim); +static void bfa_tskim_iocdisable_ios(struct bfa_tskim_s *tskim); + +/* + * forward declaration of BFA TSKIM state machine + */ +static void bfa_tskim_sm_uninit(struct bfa_tskim_s *tskim, + enum bfa_tskim_event event); +static void bfa_tskim_sm_active(struct bfa_tskim_s *tskim, + enum bfa_tskim_event event); +static void bfa_tskim_sm_cleanup(struct bfa_tskim_s *tskim, + enum bfa_tskim_event event); +static void bfa_tskim_sm_iocleanup(struct bfa_tskim_s *tskim, + enum bfa_tskim_event event); +static void bfa_tskim_sm_qfull(struct bfa_tskim_s *tskim, + enum bfa_tskim_event event); +static void bfa_tskim_sm_cleanup_qfull(struct bfa_tskim_s *tskim, + enum bfa_tskim_event event); +static void bfa_tskim_sm_hcb(struct bfa_tskim_s *tskim, + enum bfa_tskim_event event); +/* + * BFA FCP Initiator Mode module + */ + +/* + * Compute and return memory needed by FCP(im) module. + */ +static void +bfa_fcpim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len) +{ + bfa_itnim_meminfo(cfg, km_len); + + /* + * IO memory + */ + *km_len += cfg->fwcfg.num_ioim_reqs * + (sizeof(struct bfa_ioim_s) + sizeof(struct bfa_ioim_sp_s)); + + /* + * task management command memory + */ + if (cfg->fwcfg.num_tskim_reqs < BFA_TSKIM_MIN) + cfg->fwcfg.num_tskim_reqs = BFA_TSKIM_MIN; + *km_len += cfg->fwcfg.num_tskim_reqs * sizeof(struct bfa_tskim_s); +} + + +static void +bfa_fcpim_attach(struct bfa_fcp_mod_s *fcp, void *bfad, + struct bfa_iocfc_cfg_s *cfg, struct bfa_pcidev_s *pcidev) +{ + struct bfa_fcpim_s *fcpim = &fcp->fcpim; + struct bfa_s *bfa = fcp->bfa; + + bfa_trc(bfa, cfg->drvcfg.path_tov); + bfa_trc(bfa, cfg->fwcfg.num_rports); + bfa_trc(bfa, cfg->fwcfg.num_ioim_reqs); + bfa_trc(bfa, cfg->fwcfg.num_tskim_reqs); + + fcpim->fcp = fcp; + fcpim->bfa = bfa; + fcpim->num_itnims = cfg->fwcfg.num_rports; + fcpim->num_tskim_reqs = cfg->fwcfg.num_tskim_reqs; + fcpim->path_tov = cfg->drvcfg.path_tov; + fcpim->delay_comp = cfg->drvcfg.delay_comp; + fcpim->profile_comp = NULL; + fcpim->profile_start = NULL; + + bfa_itnim_attach(fcpim); + bfa_tskim_attach(fcpim); + bfa_ioim_attach(fcpim); +} + +static void +bfa_fcpim_iocdisable(struct bfa_fcp_mod_s *fcp) +{ + struct bfa_fcpim_s *fcpim = &fcp->fcpim; + struct bfa_itnim_s *itnim; + struct list_head *qe, *qen; + + /* Enqueue unused ioim resources to free_q */ + list_splice_tail_init(&fcpim->tskim_unused_q, &fcpim->tskim_free_q); + + list_for_each_safe(qe, qen, &fcpim->itnim_q) { + itnim = (struct bfa_itnim_s *) qe; + bfa_itnim_iocdisable(itnim); + } +} + +void +bfa_fcpim_path_tov_set(struct bfa_s *bfa, u16 path_tov) +{ + struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); + + fcpim->path_tov = path_tov * 1000; + if (fcpim->path_tov > BFA_FCPIM_PATHTOV_MAX) + fcpim->path_tov = BFA_FCPIM_PATHTOV_MAX; +} + +u16 +bfa_fcpim_path_tov_get(struct bfa_s *bfa) +{ + struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); + + return fcpim->path_tov / 1000; +} + +#define bfa_fcpim_add_iostats(__l, __r, __stats) \ + (__l->__stats += __r->__stats) + +void +bfa_fcpim_add_stats(struct bfa_itnim_iostats_s *lstats, + struct bfa_itnim_iostats_s *rstats) +{ + bfa_fcpim_add_iostats(lstats, rstats, total_ios); + bfa_fcpim_add_iostats(lstats, rstats, qresumes); + bfa_fcpim_add_iostats(lstats, rstats, no_iotags); + bfa_fcpim_add_iostats(lstats, rstats, io_aborts); + bfa_fcpim_add_iostats(lstats, rstats, no_tskims); + bfa_fcpim_add_iostats(lstats, rstats, iocomp_ok); + bfa_fcpim_add_iostats(lstats, rstats, iocomp_underrun); + bfa_fcpim_add_iostats(lstats, rstats, iocomp_overrun); + bfa_fcpim_add_iostats(lstats, rstats, iocomp_aborted); + bfa_fcpim_add_iostats(lstats, rstats, iocomp_timedout); + bfa_fcpim_add_iostats(lstats, rstats, iocom_nexus_abort); + bfa_fcpim_add_iostats(lstats, rstats, iocom_proto_err); + bfa_fcpim_add_iostats(lstats, rstats, iocom_dif_err); + bfa_fcpim_add_iostats(lstats, rstats, iocom_sqer_needed); + bfa_fcpim_add_iostats(lstats, rstats, iocom_res_free); + bfa_fcpim_add_iostats(lstats, rstats, iocom_hostabrts); + bfa_fcpim_add_iostats(lstats, rstats, iocom_utags); + bfa_fcpim_add_iostats(lstats, rstats, io_cleanups); + bfa_fcpim_add_iostats(lstats, rstats, io_tmaborts); + bfa_fcpim_add_iostats(lstats, rstats, onlines); + bfa_fcpim_add_iostats(lstats, rstats, offlines); + bfa_fcpim_add_iostats(lstats, rstats, creates); + bfa_fcpim_add_iostats(lstats, rstats, deletes); + bfa_fcpim_add_iostats(lstats, rstats, create_comps); + bfa_fcpim_add_iostats(lstats, rstats, delete_comps); + bfa_fcpim_add_iostats(lstats, rstats, sler_events); + bfa_fcpim_add_iostats(lstats, rstats, fw_create); + bfa_fcpim_add_iostats(lstats, rstats, fw_delete); + bfa_fcpim_add_iostats(lstats, rstats, ioc_disabled); + bfa_fcpim_add_iostats(lstats, rstats, cleanup_comps); + bfa_fcpim_add_iostats(lstats, rstats, tm_cmnds); + bfa_fcpim_add_iostats(lstats, rstats, tm_fw_rsps); + bfa_fcpim_add_iostats(lstats, rstats, tm_success); + bfa_fcpim_add_iostats(lstats, rstats, tm_failures); + bfa_fcpim_add_iostats(lstats, rstats, tm_io_comps); + bfa_fcpim_add_iostats(lstats, rstats, tm_qresumes); + bfa_fcpim_add_iostats(lstats, rstats, tm_iocdowns); + bfa_fcpim_add_iostats(lstats, rstats, tm_cleanups); + bfa_fcpim_add_iostats(lstats, rstats, tm_cleanup_comps); + bfa_fcpim_add_iostats(lstats, rstats, io_comps); + bfa_fcpim_add_iostats(lstats, rstats, input_reqs); + bfa_fcpim_add_iostats(lstats, rstats, output_reqs); + bfa_fcpim_add_iostats(lstats, rstats, rd_throughput); + bfa_fcpim_add_iostats(lstats, rstats, wr_throughput); +} + +bfa_status_t +bfa_fcpim_port_iostats(struct bfa_s *bfa, + struct bfa_itnim_iostats_s *stats, u8 lp_tag) +{ + struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); + struct list_head *qe, *qen; + struct bfa_itnim_s *itnim; + + /* accumulate IO stats from itnim */ + memset(stats, 0, sizeof(struct bfa_itnim_iostats_s)); + list_for_each_safe(qe, qen, &fcpim->itnim_q) { + itnim = (struct bfa_itnim_s *) qe; + if (itnim->rport->rport_info.lp_tag != lp_tag) + continue; + bfa_fcpim_add_stats(stats, &(itnim->stats)); + } + return BFA_STATUS_OK; +} + +void +bfa_ioim_profile_comp(struct bfa_ioim_s *ioim) +{ + struct bfa_itnim_latency_s *io_lat = + &(ioim->itnim->ioprofile.io_latency); + u32 val, idx; + + val = (u32)(jiffies - ioim->start_time); + idx = bfa_ioim_get_index(scsi_bufflen((struct scsi_cmnd *)ioim->dio)); + bfa_itnim_ioprofile_update(ioim->itnim, idx); + + io_lat->count[idx]++; + io_lat->min[idx] = (io_lat->min[idx] < val) ? io_lat->min[idx] : val; + io_lat->max[idx] = (io_lat->max[idx] > val) ? io_lat->max[idx] : val; + io_lat->avg[idx] += val; +} + +void +bfa_ioim_profile_start(struct bfa_ioim_s *ioim) +{ + ioim->start_time = jiffies; +} + +bfa_status_t +bfa_fcpim_profile_on(struct bfa_s *bfa, u32 time) +{ + struct bfa_itnim_s *itnim; + struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); + struct list_head *qe, *qen; + + /* accumulate IO stats from itnim */ + list_for_each_safe(qe, qen, &fcpim->itnim_q) { + itnim = (struct bfa_itnim_s *) qe; + bfa_itnim_clear_stats(itnim); + } + fcpim->io_profile = BFA_TRUE; + fcpim->io_profile_start_time = time; + fcpim->profile_comp = bfa_ioim_profile_comp; + fcpim->profile_start = bfa_ioim_profile_start; + return BFA_STATUS_OK; +} + +bfa_status_t +bfa_fcpim_profile_off(struct bfa_s *bfa) +{ + struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); + fcpim->io_profile = BFA_FALSE; + fcpim->io_profile_start_time = 0; + fcpim->profile_comp = NULL; + fcpim->profile_start = NULL; + return BFA_STATUS_OK; +} + +u16 +bfa_fcpim_qdepth_get(struct bfa_s *bfa) +{ + struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); + + return fcpim->q_depth; +} + +/* + * BFA ITNIM module state machine functions + */ + +/* + * Beginning/unallocated state - no events expected. + */ +static void +bfa_itnim_sm_uninit(struct bfa_itnim_s *itnim, enum bfa_itnim_event event) +{ + bfa_trc(itnim->bfa, itnim->rport->rport_tag); + bfa_trc(itnim->bfa, event); + + switch (event) { + case BFA_ITNIM_SM_CREATE: + bfa_sm_set_state(itnim, bfa_itnim_sm_created); + itnim->is_online = BFA_FALSE; + bfa_fcpim_additn(itnim); + break; + + default: + bfa_sm_fault(itnim->bfa, event); + } +} + +/* + * Beginning state, only online event expected. + */ +static void +bfa_itnim_sm_created(struct bfa_itnim_s *itnim, enum bfa_itnim_event event) +{ + bfa_trc(itnim->bfa, itnim->rport->rport_tag); + bfa_trc(itnim->bfa, event); + + switch (event) { + case BFA_ITNIM_SM_ONLINE: + if (bfa_itnim_send_fwcreate(itnim)) + bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate); + else + bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate_qfull); + break; + + case BFA_ITNIM_SM_DELETE: + bfa_sm_set_state(itnim, bfa_itnim_sm_uninit); + bfa_fcpim_delitn(itnim); + break; + + case BFA_ITNIM_SM_HWFAIL: + bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); + break; + + default: + bfa_sm_fault(itnim->bfa, event); + } +} + +/* + * Waiting for itnim create response from firmware. + */ +static void +bfa_itnim_sm_fwcreate(struct bfa_itnim_s *itnim, enum bfa_itnim_event event) +{ + bfa_trc(itnim->bfa, itnim->rport->rport_tag); + bfa_trc(itnim->bfa, event); + + switch (event) { + case BFA_ITNIM_SM_FWRSP: + bfa_sm_set_state(itnim, bfa_itnim_sm_online); + itnim->is_online = BFA_TRUE; + bfa_itnim_iotov_online(itnim); + bfa_itnim_online_cb(itnim); + break; + + case BFA_ITNIM_SM_DELETE: + bfa_sm_set_state(itnim, bfa_itnim_sm_delete_pending); + break; + + case BFA_ITNIM_SM_OFFLINE: + if (bfa_itnim_send_fwdelete(itnim)) + bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete); + else + bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete_qfull); + break; + + case BFA_ITNIM_SM_HWFAIL: + bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); + break; + + default: + bfa_sm_fault(itnim->bfa, event); + } +} + +static void +bfa_itnim_sm_fwcreate_qfull(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event) +{ + bfa_trc(itnim->bfa, itnim->rport->rport_tag); + bfa_trc(itnim->bfa, event); + + switch (event) { + case BFA_ITNIM_SM_QRESUME: + bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate); + bfa_itnim_send_fwcreate(itnim); + break; + + case BFA_ITNIM_SM_DELETE: + bfa_sm_set_state(itnim, bfa_itnim_sm_uninit); + bfa_reqq_wcancel(&itnim->reqq_wait); + bfa_fcpim_delitn(itnim); + break; + + case BFA_ITNIM_SM_OFFLINE: + bfa_sm_set_state(itnim, bfa_itnim_sm_offline); + bfa_reqq_wcancel(&itnim->reqq_wait); + bfa_itnim_offline_cb(itnim); + break; + + case BFA_ITNIM_SM_HWFAIL: + bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); + bfa_reqq_wcancel(&itnim->reqq_wait); + break; + + default: + bfa_sm_fault(itnim->bfa, event); + } +} + +/* + * Waiting for itnim create response from firmware, a delete is pending. + */ +static void +bfa_itnim_sm_delete_pending(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event) +{ + bfa_trc(itnim->bfa, itnim->rport->rport_tag); + bfa_trc(itnim->bfa, event); + + switch (event) { + case BFA_ITNIM_SM_FWRSP: + if (bfa_itnim_send_fwdelete(itnim)) + bfa_sm_set_state(itnim, bfa_itnim_sm_deleting); + else + bfa_sm_set_state(itnim, bfa_itnim_sm_deleting_qfull); + break; + + case BFA_ITNIM_SM_HWFAIL: + bfa_sm_set_state(itnim, bfa_itnim_sm_uninit); + bfa_fcpim_delitn(itnim); + break; + + default: + bfa_sm_fault(itnim->bfa, event); + } +} + +/* + * Online state - normal parking state. + */ +static void +bfa_itnim_sm_online(struct bfa_itnim_s *itnim, enum bfa_itnim_event event) +{ + bfa_trc(itnim->bfa, itnim->rport->rport_tag); + bfa_trc(itnim->bfa, event); + + switch (event) { + case BFA_ITNIM_SM_OFFLINE: + bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_offline); + itnim->is_online = BFA_FALSE; + bfa_itnim_iotov_start(itnim); + bfa_itnim_cleanup(itnim); + break; + + case BFA_ITNIM_SM_DELETE: + bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_delete); + itnim->is_online = BFA_FALSE; + bfa_itnim_cleanup(itnim); + break; + + case BFA_ITNIM_SM_SLER: + bfa_sm_set_state(itnim, bfa_itnim_sm_sler); + itnim->is_online = BFA_FALSE; + bfa_itnim_iotov_start(itnim); + bfa_itnim_sler_cb(itnim); + break; + + case BFA_ITNIM_SM_HWFAIL: + bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); + itnim->is_online = BFA_FALSE; + bfa_itnim_iotov_start(itnim); + bfa_itnim_iocdisable_cleanup(itnim); + break; + + default: + bfa_sm_fault(itnim->bfa, event); + } +} + +/* + * Second level error recovery need. + */ +static void +bfa_itnim_sm_sler(struct bfa_itnim_s *itnim, enum bfa_itnim_event event) +{ + bfa_trc(itnim->bfa, itnim->rport->rport_tag); + bfa_trc(itnim->bfa, event); + + switch (event) { + case BFA_ITNIM_SM_OFFLINE: + bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_offline); + bfa_itnim_cleanup(itnim); + break; + + case BFA_ITNIM_SM_DELETE: + bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_delete); + bfa_itnim_cleanup(itnim); + bfa_itnim_iotov_delete(itnim); + break; + + case BFA_ITNIM_SM_HWFAIL: + bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); + bfa_itnim_iocdisable_cleanup(itnim); + break; + + default: + bfa_sm_fault(itnim->bfa, event); + } +} + +/* + * Going offline. Waiting for active IO cleanup. + */ +static void +bfa_itnim_sm_cleanup_offline(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event) +{ + bfa_trc(itnim->bfa, itnim->rport->rport_tag); + bfa_trc(itnim->bfa, event); + + switch (event) { + case BFA_ITNIM_SM_CLEANUP: + if (bfa_itnim_send_fwdelete(itnim)) + bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete); + else + bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete_qfull); + break; + + case BFA_ITNIM_SM_DELETE: + bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_delete); + bfa_itnim_iotov_delete(itnim); + break; + + case BFA_ITNIM_SM_HWFAIL: + bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); + bfa_itnim_iocdisable_cleanup(itnim); + bfa_itnim_offline_cb(itnim); + break; + + case BFA_ITNIM_SM_SLER: + break; + + default: + bfa_sm_fault(itnim->bfa, event); + } +} + +/* + * Deleting itnim. Waiting for active IO cleanup. + */ +static void +bfa_itnim_sm_cleanup_delete(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event) +{ + bfa_trc(itnim->bfa, itnim->rport->rport_tag); + bfa_trc(itnim->bfa, event); + + switch (event) { + case BFA_ITNIM_SM_CLEANUP: + if (bfa_itnim_send_fwdelete(itnim)) + bfa_sm_set_state(itnim, bfa_itnim_sm_deleting); + else + bfa_sm_set_state(itnim, bfa_itnim_sm_deleting_qfull); + break; + + case BFA_ITNIM_SM_HWFAIL: + bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); + bfa_itnim_iocdisable_cleanup(itnim); + break; + + default: + bfa_sm_fault(itnim->bfa, event); + } +} + +/* + * Rport offline. Fimrware itnim is being deleted - awaiting f/w response. + */ +static void +bfa_itnim_sm_fwdelete(struct bfa_itnim_s *itnim, enum bfa_itnim_event event) +{ + bfa_trc(itnim->bfa, itnim->rport->rport_tag); + bfa_trc(itnim->bfa, event); + + switch (event) { + case BFA_ITNIM_SM_FWRSP: + bfa_sm_set_state(itnim, bfa_itnim_sm_offline); + bfa_itnim_offline_cb(itnim); + break; + + case BFA_ITNIM_SM_DELETE: + bfa_sm_set_state(itnim, bfa_itnim_sm_deleting); + break; + + case BFA_ITNIM_SM_HWFAIL: + bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); + bfa_itnim_offline_cb(itnim); + break; + + default: + bfa_sm_fault(itnim->bfa, event); + } +} + +static void +bfa_itnim_sm_fwdelete_qfull(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event) +{ + bfa_trc(itnim->bfa, itnim->rport->rport_tag); + bfa_trc(itnim->bfa, event); + + switch (event) { + case BFA_ITNIM_SM_QRESUME: + bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete); + bfa_itnim_send_fwdelete(itnim); + break; + + case BFA_ITNIM_SM_DELETE: + bfa_sm_set_state(itnim, bfa_itnim_sm_deleting_qfull); + break; + + case BFA_ITNIM_SM_HWFAIL: + bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); + bfa_reqq_wcancel(&itnim->reqq_wait); + bfa_itnim_offline_cb(itnim); + break; + + default: + bfa_sm_fault(itnim->bfa, event); + } +} + +/* + * Offline state. + */ +static void +bfa_itnim_sm_offline(struct bfa_itnim_s *itnim, enum bfa_itnim_event event) +{ + bfa_trc(itnim->bfa, itnim->rport->rport_tag); + bfa_trc(itnim->bfa, event); + + switch (event) { + case BFA_ITNIM_SM_DELETE: + bfa_sm_set_state(itnim, bfa_itnim_sm_uninit); + bfa_itnim_iotov_delete(itnim); + bfa_fcpim_delitn(itnim); + break; + + case BFA_ITNIM_SM_ONLINE: + if (bfa_itnim_send_fwcreate(itnim)) + bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate); + else + bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate_qfull); + break; + + case BFA_ITNIM_SM_HWFAIL: + bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); + break; + + default: + bfa_sm_fault(itnim->bfa, event); + } +} + +static void +bfa_itnim_sm_iocdisable(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event) +{ + bfa_trc(itnim->bfa, itnim->rport->rport_tag); + bfa_trc(itnim->bfa, event); + + switch (event) { + case BFA_ITNIM_SM_DELETE: + bfa_sm_set_state(itnim, bfa_itnim_sm_uninit); + bfa_itnim_iotov_delete(itnim); + bfa_fcpim_delitn(itnim); + break; + + case BFA_ITNIM_SM_OFFLINE: + bfa_itnim_offline_cb(itnim); + break; + + case BFA_ITNIM_SM_ONLINE: + if (bfa_itnim_send_fwcreate(itnim)) + bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate); + else + bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate_qfull); + break; + + case BFA_ITNIM_SM_HWFAIL: + break; + + default: + bfa_sm_fault(itnim->bfa, event); + } +} + +/* + * Itnim is deleted, waiting for firmware response to delete. + */ +static void +bfa_itnim_sm_deleting(struct bfa_itnim_s *itnim, enum bfa_itnim_event event) +{ + bfa_trc(itnim->bfa, itnim->rport->rport_tag); + bfa_trc(itnim->bfa, event); + + switch (event) { + case BFA_ITNIM_SM_FWRSP: + case BFA_ITNIM_SM_HWFAIL: + bfa_sm_set_state(itnim, bfa_itnim_sm_uninit); + bfa_fcpim_delitn(itnim); + break; + + default: + bfa_sm_fault(itnim->bfa, event); + } +} + +static void +bfa_itnim_sm_deleting_qfull(struct bfa_itnim_s *itnim, + enum bfa_itnim_event event) +{ + bfa_trc(itnim->bfa, itnim->rport->rport_tag); + bfa_trc(itnim->bfa, event); + + switch (event) { + case BFA_ITNIM_SM_QRESUME: + bfa_sm_set_state(itnim, bfa_itnim_sm_deleting); + bfa_itnim_send_fwdelete(itnim); + break; + + case BFA_ITNIM_SM_HWFAIL: + bfa_sm_set_state(itnim, bfa_itnim_sm_uninit); + bfa_reqq_wcancel(&itnim->reqq_wait); + bfa_fcpim_delitn(itnim); + break; + + default: + bfa_sm_fault(itnim->bfa, event); + } +} + +/* + * Initiate cleanup of all IOs on an IOC failure. + */ +static void +bfa_itnim_iocdisable_cleanup(struct bfa_itnim_s *itnim) +{ + struct bfa_tskim_s *tskim; + struct bfa_ioim_s *ioim; + struct list_head *qe, *qen; + + list_for_each_safe(qe, qen, &itnim->tsk_q) { + tskim = (struct bfa_tskim_s *) qe; + bfa_tskim_iocdisable(tskim); + } + + list_for_each_safe(qe, qen, &itnim->io_q) { + ioim = (struct bfa_ioim_s *) qe; + bfa_ioim_iocdisable(ioim); + } + + /* + * For IO request in pending queue, we pretend an early timeout. + */ + list_for_each_safe(qe, qen, &itnim->pending_q) { + ioim = (struct bfa_ioim_s *) qe; + bfa_ioim_tov(ioim); + } + + list_for_each_safe(qe, qen, &itnim->io_cleanup_q) { + ioim = (struct bfa_ioim_s *) qe; + bfa_ioim_iocdisable(ioim); + } +} + +/* + * IO cleanup completion + */ +static void +bfa_itnim_cleanp_comp(void *itnim_cbarg) +{ + struct bfa_itnim_s *itnim = itnim_cbarg; + + bfa_stats(itnim, cleanup_comps); + bfa_sm_send_event(itnim, BFA_ITNIM_SM_CLEANUP); +} + +/* + * Initiate cleanup of all IOs. + */ +static void +bfa_itnim_cleanup(struct bfa_itnim_s *itnim) +{ + struct bfa_ioim_s *ioim; + struct bfa_tskim_s *tskim; + struct list_head *qe, *qen; + + bfa_wc_init(&itnim->wc, bfa_itnim_cleanp_comp, itnim); + + list_for_each_safe(qe, qen, &itnim->io_q) { + ioim = (struct bfa_ioim_s *) qe; + + /* + * Move IO to a cleanup queue from active queue so that a later + * TM will not pickup this IO. + */ + list_del(&ioim->qe); + list_add_tail(&ioim->qe, &itnim->io_cleanup_q); + + bfa_wc_up(&itnim->wc); + bfa_ioim_cleanup(ioim); + } + + list_for_each_safe(qe, qen, &itnim->tsk_q) { + tskim = (struct bfa_tskim_s *) qe; + bfa_wc_up(&itnim->wc); + bfa_tskim_cleanup(tskim); + } + + bfa_wc_wait(&itnim->wc); +} + +static void +__bfa_cb_itnim_online(void *cbarg, bfa_boolean_t complete) +{ + struct bfa_itnim_s *itnim = cbarg; + + if (complete) + bfa_cb_itnim_online(itnim->ditn); +} + +static void +__bfa_cb_itnim_offline(void *cbarg, bfa_boolean_t complete) +{ + struct bfa_itnim_s *itnim = cbarg; + + if (complete) + bfa_cb_itnim_offline(itnim->ditn); +} + +static void +__bfa_cb_itnim_sler(void *cbarg, bfa_boolean_t complete) +{ + struct bfa_itnim_s *itnim = cbarg; + + if (complete) + bfa_cb_itnim_sler(itnim->ditn); +} + +/* + * Call to resume any I/O requests waiting for room in request queue. + */ +static void +bfa_itnim_qresume(void *cbarg) +{ + struct bfa_itnim_s *itnim = cbarg; + + bfa_sm_send_event(itnim, BFA_ITNIM_SM_QRESUME); +} + +/* + * bfa_itnim_public + */ + +void +bfa_itnim_iodone(struct bfa_itnim_s *itnim) +{ + bfa_wc_down(&itnim->wc); +} + +void +bfa_itnim_tskdone(struct bfa_itnim_s *itnim) +{ + bfa_wc_down(&itnim->wc); +} + +void +bfa_itnim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len) +{ + /* + * ITN memory + */ + *km_len += cfg->fwcfg.num_rports * sizeof(struct bfa_itnim_s); +} + +void +bfa_itnim_attach(struct bfa_fcpim_s *fcpim) +{ + struct bfa_s *bfa = fcpim->bfa; + struct bfa_fcp_mod_s *fcp = fcpim->fcp; + struct bfa_itnim_s *itnim; + int i, j; + + INIT_LIST_HEAD(&fcpim->itnim_q); + + itnim = (struct bfa_itnim_s *) bfa_mem_kva_curp(fcp); + fcpim->itnim_arr = itnim; + + for (i = 0; i < fcpim->num_itnims; i++, itnim++) { + memset(itnim, 0, sizeof(struct bfa_itnim_s)); + itnim->bfa = bfa; + itnim->fcpim = fcpim; + itnim->reqq = BFA_REQQ_QOS_LO; + itnim->rport = BFA_RPORT_FROM_TAG(bfa, i); + itnim->iotov_active = BFA_FALSE; + bfa_reqq_winit(&itnim->reqq_wait, bfa_itnim_qresume, itnim); + + INIT_LIST_HEAD(&itnim->io_q); + INIT_LIST_HEAD(&itnim->io_cleanup_q); + INIT_LIST_HEAD(&itnim->pending_q); + INIT_LIST_HEAD(&itnim->tsk_q); + INIT_LIST_HEAD(&itnim->delay_comp_q); + for (j = 0; j < BFA_IOBUCKET_MAX; j++) + itnim->ioprofile.io_latency.min[j] = ~0; + bfa_sm_set_state(itnim, bfa_itnim_sm_uninit); + } + + bfa_mem_kva_curp(fcp) = (u8 *) itnim; +} + +void +bfa_itnim_iocdisable(struct bfa_itnim_s *itnim) +{ + bfa_stats(itnim, ioc_disabled); + bfa_sm_send_event(itnim, BFA_ITNIM_SM_HWFAIL); +} + +static bfa_boolean_t +bfa_itnim_send_fwcreate(struct bfa_itnim_s *itnim) +{ + struct bfi_itn_create_req_s *m; + + itnim->msg_no++; + + /* + * check for room in queue to send request now + */ + m = bfa_reqq_next(itnim->bfa, itnim->reqq); + if (!m) { + bfa_reqq_wait(itnim->bfa, itnim->reqq, &itnim->reqq_wait); + return BFA_FALSE; + } + + bfi_h2i_set(m->mh, BFI_MC_ITN, BFI_ITN_H2I_CREATE_REQ, + bfa_fn_lpu(itnim->bfa)); + m->fw_handle = itnim->rport->fw_handle; + m->class = FC_CLASS_3; + m->seq_rec = itnim->seq_rec; + m->msg_no = itnim->msg_no; + bfa_stats(itnim, fw_create); + + /* + * queue I/O message to firmware + */ + bfa_reqq_produce(itnim->bfa, itnim->reqq, m->mh); + return BFA_TRUE; +} + +static bfa_boolean_t +bfa_itnim_send_fwdelete(struct bfa_itnim_s *itnim) +{ + struct bfi_itn_delete_req_s *m; + + /* + * check for room in queue to send request now + */ + m = bfa_reqq_next(itnim->bfa, itnim->reqq); + if (!m) { + bfa_reqq_wait(itnim->bfa, itnim->reqq, &itnim->reqq_wait); + return BFA_FALSE; + } + + bfi_h2i_set(m->mh, BFI_MC_ITN, BFI_ITN_H2I_DELETE_REQ, + bfa_fn_lpu(itnim->bfa)); + m->fw_handle = itnim->rport->fw_handle; + bfa_stats(itnim, fw_delete); + + /* + * queue I/O message to firmware + */ + bfa_reqq_produce(itnim->bfa, itnim->reqq, m->mh); + return BFA_TRUE; +} + +/* + * Cleanup all pending failed inflight requests. + */ +static void +bfa_itnim_delayed_comp(struct bfa_itnim_s *itnim, bfa_boolean_t iotov) +{ + struct bfa_ioim_s *ioim; + struct list_head *qe, *qen; + + list_for_each_safe(qe, qen, &itnim->delay_comp_q) { + ioim = (struct bfa_ioim_s *)qe; + bfa_ioim_delayed_comp(ioim, iotov); + } +} + +/* + * Start all pending IO requests. + */ +static void +bfa_itnim_iotov_online(struct bfa_itnim_s *itnim) +{ + struct bfa_ioim_s *ioim; + + bfa_itnim_iotov_stop(itnim); + + /* + * Abort all inflight IO requests in the queue + */ + bfa_itnim_delayed_comp(itnim, BFA_FALSE); + + /* + * Start all pending IO requests. + */ + while (!list_empty(&itnim->pending_q)) { + bfa_q_deq(&itnim->pending_q, &ioim); + list_add_tail(&ioim->qe, &itnim->io_q); + bfa_ioim_start(ioim); + } +} + +/* + * Fail all pending IO requests + */ +static void +bfa_itnim_iotov_cleanup(struct bfa_itnim_s *itnim) +{ + struct bfa_ioim_s *ioim; + + /* + * Fail all inflight IO requests in the queue + */ + bfa_itnim_delayed_comp(itnim, BFA_TRUE); + + /* + * Fail any pending IO requests. + */ + while (!list_empty(&itnim->pending_q)) { + bfa_q_deq(&itnim->pending_q, &ioim); + list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q); + bfa_ioim_tov(ioim); + } +} + +/* + * IO TOV timer callback. Fail any pending IO requests. + */ +static void +bfa_itnim_iotov(void *itnim_arg) +{ + struct bfa_itnim_s *itnim = itnim_arg; + + itnim->iotov_active = BFA_FALSE; + + bfa_cb_itnim_tov_begin(itnim->ditn); + bfa_itnim_iotov_cleanup(itnim); + bfa_cb_itnim_tov(itnim->ditn); +} + +/* + * Start IO TOV timer for failing back pending IO requests in offline state. + */ +static void +bfa_itnim_iotov_start(struct bfa_itnim_s *itnim) +{ + if (itnim->fcpim->path_tov > 0) { + + itnim->iotov_active = BFA_TRUE; + WARN_ON(!bfa_itnim_hold_io(itnim)); + bfa_timer_start(itnim->bfa, &itnim->timer, + bfa_itnim_iotov, itnim, itnim->fcpim->path_tov); + } +} + +/* + * Stop IO TOV timer. + */ +static void +bfa_itnim_iotov_stop(struct bfa_itnim_s *itnim) +{ + if (itnim->iotov_active) { + itnim->iotov_active = BFA_FALSE; + bfa_timer_stop(&itnim->timer); + } +} + +/* + * Stop IO TOV timer. + */ +static void +bfa_itnim_iotov_delete(struct bfa_itnim_s *itnim) +{ + bfa_boolean_t pathtov_active = BFA_FALSE; + + if (itnim->iotov_active) + pathtov_active = BFA_TRUE; + + bfa_itnim_iotov_stop(itnim); + if (pathtov_active) + bfa_cb_itnim_tov_begin(itnim->ditn); + bfa_itnim_iotov_cleanup(itnim); + if (pathtov_active) + bfa_cb_itnim_tov(itnim->ditn); +} + +static void +bfa_itnim_update_del_itn_stats(struct bfa_itnim_s *itnim) +{ + struct bfa_fcpim_s *fcpim = BFA_FCPIM(itnim->bfa); + fcpim->del_itn_stats.del_itn_iocomp_aborted += + itnim->stats.iocomp_aborted; + fcpim->del_itn_stats.del_itn_iocomp_timedout += + itnim->stats.iocomp_timedout; + fcpim->del_itn_stats.del_itn_iocom_sqer_needed += + itnim->stats.iocom_sqer_needed; + fcpim->del_itn_stats.del_itn_iocom_res_free += + itnim->stats.iocom_res_free; + fcpim->del_itn_stats.del_itn_iocom_hostabrts += + itnim->stats.iocom_hostabrts; + fcpim->del_itn_stats.del_itn_total_ios += itnim->stats.total_ios; + fcpim->del_itn_stats.del_io_iocdowns += itnim->stats.io_iocdowns; + fcpim->del_itn_stats.del_tm_iocdowns += itnim->stats.tm_iocdowns; +} + +/* + * bfa_itnim_public + */ + +/* + * Itnim interrupt processing. + */ +void +bfa_itnim_isr(struct bfa_s *bfa, struct bfi_msg_s *m) +{ + struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); + union bfi_itn_i2h_msg_u msg; + struct bfa_itnim_s *itnim; + + bfa_trc(bfa, m->mhdr.msg_id); + + msg.msg = m; + + switch (m->mhdr.msg_id) { + case BFI_ITN_I2H_CREATE_RSP: + itnim = BFA_ITNIM_FROM_TAG(fcpim, + msg.create_rsp->bfa_handle); + WARN_ON(msg.create_rsp->status != BFA_STATUS_OK); + bfa_stats(itnim, create_comps); + bfa_sm_send_event(itnim, BFA_ITNIM_SM_FWRSP); + break; + + case BFI_ITN_I2H_DELETE_RSP: + itnim = BFA_ITNIM_FROM_TAG(fcpim, + msg.delete_rsp->bfa_handle); + WARN_ON(msg.delete_rsp->status != BFA_STATUS_OK); + bfa_stats(itnim, delete_comps); + bfa_sm_send_event(itnim, BFA_ITNIM_SM_FWRSP); + break; + + case BFI_ITN_I2H_SLER_EVENT: + itnim = BFA_ITNIM_FROM_TAG(fcpim, + msg.sler_event->bfa_handle); + bfa_stats(itnim, sler_events); + bfa_sm_send_event(itnim, BFA_ITNIM_SM_SLER); + break; + + default: + bfa_trc(bfa, m->mhdr.msg_id); + WARN_ON(1); + } +} + +/* + * bfa_itnim_api + */ + +struct bfa_itnim_s * +bfa_itnim_create(struct bfa_s *bfa, struct bfa_rport_s *rport, void *ditn) +{ + struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); + struct bfa_itnim_s *itnim; + + bfa_itn_create(bfa, rport, bfa_itnim_isr); + + itnim = BFA_ITNIM_FROM_TAG(fcpim, rport->rport_tag); + WARN_ON(itnim->rport != rport); + + itnim->ditn = ditn; + + bfa_stats(itnim, creates); + bfa_sm_send_event(itnim, BFA_ITNIM_SM_CREATE); + + return itnim; +} + +void +bfa_itnim_delete(struct bfa_itnim_s *itnim) +{ + bfa_stats(itnim, deletes); + bfa_sm_send_event(itnim, BFA_ITNIM_SM_DELETE); +} + +void +bfa_itnim_online(struct bfa_itnim_s *itnim, bfa_boolean_t seq_rec) +{ + itnim->seq_rec = seq_rec; + bfa_stats(itnim, onlines); + bfa_sm_send_event(itnim, BFA_ITNIM_SM_ONLINE); +} + +void +bfa_itnim_offline(struct bfa_itnim_s *itnim) +{ + bfa_stats(itnim, offlines); + bfa_sm_send_event(itnim, BFA_ITNIM_SM_OFFLINE); +} + +/* + * Return true if itnim is considered offline for holding off IO request. + * IO is not held if itnim is being deleted. + */ +bfa_boolean_t +bfa_itnim_hold_io(struct bfa_itnim_s *itnim) +{ + return itnim->fcpim->path_tov && itnim->iotov_active && + (bfa_sm_cmp_state(itnim, bfa_itnim_sm_fwcreate) || + bfa_sm_cmp_state(itnim, bfa_itnim_sm_sler) || + bfa_sm_cmp_state(itnim, bfa_itnim_sm_cleanup_offline) || + bfa_sm_cmp_state(itnim, bfa_itnim_sm_fwdelete) || + bfa_sm_cmp_state(itnim, bfa_itnim_sm_offline) || + bfa_sm_cmp_state(itnim, bfa_itnim_sm_iocdisable)); +} + +#define bfa_io_lat_clock_res_div HZ +#define bfa_io_lat_clock_res_mul 1000 +bfa_status_t +bfa_itnim_get_ioprofile(struct bfa_itnim_s *itnim, + struct bfa_itnim_ioprofile_s *ioprofile) +{ + struct bfa_fcpim_s *fcpim; + + if (!itnim) + return BFA_STATUS_NO_FCPIM_NEXUS; + + fcpim = BFA_FCPIM(itnim->bfa); + + if (!fcpim->io_profile) + return BFA_STATUS_IOPROFILE_OFF; + + itnim->ioprofile.index = BFA_IOBUCKET_MAX; + itnim->ioprofile.io_profile_start_time = + bfa_io_profile_start_time(itnim->bfa); + itnim->ioprofile.clock_res_mul = bfa_io_lat_clock_res_mul; + itnim->ioprofile.clock_res_div = bfa_io_lat_clock_res_div; + *ioprofile = itnim->ioprofile; + + return BFA_STATUS_OK; +} + +void +bfa_itnim_clear_stats(struct bfa_itnim_s *itnim) +{ + int j; + + if (!itnim) + return; + + memset(&itnim->stats, 0, sizeof(itnim->stats)); + memset(&itnim->ioprofile, 0, sizeof(itnim->ioprofile)); + for (j = 0; j < BFA_IOBUCKET_MAX; j++) + itnim->ioprofile.io_latency.min[j] = ~0; +} + +/* + * BFA IO module state machine functions + */ + +/* + * IO is not started (unallocated). + */ +static void +bfa_ioim_sm_uninit(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) +{ + switch (event) { + case BFA_IOIM_SM_START: + if (!bfa_itnim_is_online(ioim->itnim)) { + if (!bfa_itnim_hold_io(ioim->itnim)) { + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + list_del(&ioim->qe); + list_add_tail(&ioim->qe, + &ioim->fcpim->ioim_comp_q); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, + __bfa_cb_ioim_pathtov, ioim); + } else { + list_del(&ioim->qe); + list_add_tail(&ioim->qe, + &ioim->itnim->pending_q); + } + break; + } + + if (ioim->nsges > BFI_SGE_INLINE) { + if (!bfa_ioim_sgpg_alloc(ioim)) { + bfa_sm_set_state(ioim, bfa_ioim_sm_sgalloc); + return; + } + } + + if (!bfa_ioim_send_ioreq(ioim)) { + bfa_sm_set_state(ioim, bfa_ioim_sm_qfull); + break; + } + + bfa_sm_set_state(ioim, bfa_ioim_sm_active); + break; + + case BFA_IOIM_SM_IOTOV: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_ioim_move_to_comp_q(ioim); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, + __bfa_cb_ioim_pathtov, ioim); + break; + + case BFA_IOIM_SM_ABORT: + /* + * IO in pending queue can get abort requests. Complete abort + * requests immediately. + */ + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + WARN_ON(!bfa_q_is_on_q(&ioim->itnim->pending_q, ioim)); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, + __bfa_cb_ioim_abort, ioim); + break; + + default: + bfa_sm_fault(ioim->bfa, event); + } +} + +/* + * IO is waiting for SG pages. + */ +static void +bfa_ioim_sm_sgalloc(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) +{ + bfa_trc(ioim->bfa, ioim->iotag); + bfa_trc(ioim->bfa, event); + + switch (event) { + case BFA_IOIM_SM_SGALLOCED: + if (!bfa_ioim_send_ioreq(ioim)) { + bfa_sm_set_state(ioim, bfa_ioim_sm_qfull); + break; + } + bfa_sm_set_state(ioim, bfa_ioim_sm_active); + break; + + case BFA_IOIM_SM_CLEANUP: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_sgpg_wcancel(ioim->bfa, &ioim->iosp->sgpg_wqe); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed, + ioim); + bfa_ioim_notify_cleanup(ioim); + break; + + case BFA_IOIM_SM_ABORT: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_sgpg_wcancel(ioim->bfa, &ioim->iosp->sgpg_wqe); + bfa_ioim_move_to_comp_q(ioim); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort, + ioim); + break; + + case BFA_IOIM_SM_HWFAIL: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_sgpg_wcancel(ioim->bfa, &ioim->iosp->sgpg_wqe); + bfa_ioim_move_to_comp_q(ioim); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed, + ioim); + break; + + default: + bfa_sm_fault(ioim->bfa, event); + } +} + +/* + * IO is active. + */ +static void +bfa_ioim_sm_active(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) +{ + switch (event) { + case BFA_IOIM_SM_COMP_GOOD: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_ioim_move_to_comp_q(ioim); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, + __bfa_cb_ioim_good_comp, ioim); + break; + + case BFA_IOIM_SM_COMP: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_ioim_move_to_comp_q(ioim); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_comp, + ioim); + break; + + case BFA_IOIM_SM_DONE: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free); + bfa_ioim_move_to_comp_q(ioim); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_comp, + ioim); + break; + + case BFA_IOIM_SM_ABORT: + ioim->iosp->abort_explicit = BFA_TRUE; + ioim->io_cbfn = __bfa_cb_ioim_abort; + + if (bfa_ioim_send_abort(ioim)) + bfa_sm_set_state(ioim, bfa_ioim_sm_abort); + else { + bfa_sm_set_state(ioim, bfa_ioim_sm_abort_qfull); + bfa_stats(ioim->itnim, qwait); + bfa_reqq_wait(ioim->bfa, ioim->reqq, + &ioim->iosp->reqq_wait); + } + break; + + case BFA_IOIM_SM_CLEANUP: + ioim->iosp->abort_explicit = BFA_FALSE; + ioim->io_cbfn = __bfa_cb_ioim_failed; + + if (bfa_ioim_send_abort(ioim)) + bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup); + else { + bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull); + bfa_stats(ioim->itnim, qwait); + bfa_reqq_wait(ioim->bfa, ioim->reqq, + &ioim->iosp->reqq_wait); + } + break; + + case BFA_IOIM_SM_HWFAIL: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_ioim_move_to_comp_q(ioim); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed, + ioim); + break; + + case BFA_IOIM_SM_SQRETRY: + if (bfa_ioim_maxretry_reached(ioim)) { + /* max retry reached, free IO */ + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free); + bfa_ioim_move_to_comp_q(ioim); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, + __bfa_cb_ioim_failed, ioim); + break; + } + /* waiting for IO tag resource free */ + bfa_sm_set_state(ioim, bfa_ioim_sm_cmnd_retry); + break; + + default: + bfa_sm_fault(ioim->bfa, event); + } +} + +/* + * IO is retried with new tag. + */ +static void +bfa_ioim_sm_cmnd_retry(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) +{ + switch (event) { + case BFA_IOIM_SM_FREE: + /* abts and rrq done. Now retry the IO with new tag */ + bfa_ioim_update_iotag(ioim); + if (!bfa_ioim_send_ioreq(ioim)) { + bfa_sm_set_state(ioim, bfa_ioim_sm_qfull); + break; + } + bfa_sm_set_state(ioim, bfa_ioim_sm_active); + break; + + case BFA_IOIM_SM_CLEANUP: + ioim->iosp->abort_explicit = BFA_FALSE; + ioim->io_cbfn = __bfa_cb_ioim_failed; + + if (bfa_ioim_send_abort(ioim)) + bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup); + else { + bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull); + bfa_stats(ioim->itnim, qwait); + bfa_reqq_wait(ioim->bfa, ioim->reqq, + &ioim->iosp->reqq_wait); + } + break; + + case BFA_IOIM_SM_HWFAIL: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_ioim_move_to_comp_q(ioim); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, + __bfa_cb_ioim_failed, ioim); + break; + + case BFA_IOIM_SM_ABORT: + /* in this state IO abort is done. + * Waiting for IO tag resource free. + */ + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort, + ioim); + break; + + default: + bfa_sm_fault(ioim->bfa, event); + } +} + +/* + * IO is being aborted, waiting for completion from firmware. + */ +static void +bfa_ioim_sm_abort(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) +{ + bfa_trc(ioim->bfa, ioim->iotag); + bfa_trc(ioim->bfa, event); + + switch (event) { + case BFA_IOIM_SM_COMP_GOOD: + case BFA_IOIM_SM_COMP: + case BFA_IOIM_SM_DONE: + case BFA_IOIM_SM_FREE: + break; + + case BFA_IOIM_SM_ABORT_DONE: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort, + ioim); + break; + + case BFA_IOIM_SM_ABORT_COMP: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_ioim_move_to_comp_q(ioim); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort, + ioim); + break; + + case BFA_IOIM_SM_COMP_UTAG: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_ioim_move_to_comp_q(ioim); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort, + ioim); + break; + + case BFA_IOIM_SM_CLEANUP: + WARN_ON(ioim->iosp->abort_explicit != BFA_TRUE); + ioim->iosp->abort_explicit = BFA_FALSE; + + if (bfa_ioim_send_abort(ioim)) + bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup); + else { + bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull); + bfa_stats(ioim->itnim, qwait); + bfa_reqq_wait(ioim->bfa, ioim->reqq, + &ioim->iosp->reqq_wait); + } + break; + + case BFA_IOIM_SM_HWFAIL: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_ioim_move_to_comp_q(ioim); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed, + ioim); + break; + + default: + bfa_sm_fault(ioim->bfa, event); + } +} + +/* + * IO is being cleaned up (implicit abort), waiting for completion from + * firmware. + */ +static void +bfa_ioim_sm_cleanup(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) +{ + bfa_trc(ioim->bfa, ioim->iotag); + bfa_trc(ioim->bfa, event); + + switch (event) { + case BFA_IOIM_SM_COMP_GOOD: + case BFA_IOIM_SM_COMP: + case BFA_IOIM_SM_DONE: + case BFA_IOIM_SM_FREE: + break; + + case BFA_IOIM_SM_ABORT: + /* + * IO is already being aborted implicitly + */ + ioim->io_cbfn = __bfa_cb_ioim_abort; + break; + + case BFA_IOIM_SM_ABORT_DONE: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim); + bfa_ioim_notify_cleanup(ioim); + break; + + case BFA_IOIM_SM_ABORT_COMP: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim); + bfa_ioim_notify_cleanup(ioim); + break; + + case BFA_IOIM_SM_COMP_UTAG: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim); + bfa_ioim_notify_cleanup(ioim); + break; + + case BFA_IOIM_SM_HWFAIL: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_ioim_move_to_comp_q(ioim); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed, + ioim); + break; + + case BFA_IOIM_SM_CLEANUP: + /* + * IO can be in cleanup state already due to TM command. + * 2nd cleanup request comes from ITN offline event. + */ + break; + + default: + bfa_sm_fault(ioim->bfa, event); + } +} + +/* + * IO is waiting for room in request CQ + */ +static void +bfa_ioim_sm_qfull(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) +{ + bfa_trc(ioim->bfa, ioim->iotag); + bfa_trc(ioim->bfa, event); + + switch (event) { + case BFA_IOIM_SM_QRESUME: + bfa_sm_set_state(ioim, bfa_ioim_sm_active); + bfa_ioim_send_ioreq(ioim); + break; + + case BFA_IOIM_SM_ABORT: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_reqq_wcancel(&ioim->iosp->reqq_wait); + bfa_ioim_move_to_comp_q(ioim); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort, + ioim); + break; + + case BFA_IOIM_SM_CLEANUP: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_reqq_wcancel(&ioim->iosp->reqq_wait); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed, + ioim); + bfa_ioim_notify_cleanup(ioim); + break; + + case BFA_IOIM_SM_HWFAIL: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_reqq_wcancel(&ioim->iosp->reqq_wait); + bfa_ioim_move_to_comp_q(ioim); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed, + ioim); + break; + + default: + bfa_sm_fault(ioim->bfa, event); + } +} + +/* + * Active IO is being aborted, waiting for room in request CQ. + */ +static void +bfa_ioim_sm_abort_qfull(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) +{ + bfa_trc(ioim->bfa, ioim->iotag); + bfa_trc(ioim->bfa, event); + + switch (event) { + case BFA_IOIM_SM_QRESUME: + bfa_sm_set_state(ioim, bfa_ioim_sm_abort); + bfa_ioim_send_abort(ioim); + break; + + case BFA_IOIM_SM_CLEANUP: + WARN_ON(ioim->iosp->abort_explicit != BFA_TRUE); + ioim->iosp->abort_explicit = BFA_FALSE; + bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull); + break; + + case BFA_IOIM_SM_COMP_GOOD: + case BFA_IOIM_SM_COMP: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_reqq_wcancel(&ioim->iosp->reqq_wait); + bfa_ioim_move_to_comp_q(ioim); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort, + ioim); + break; + + case BFA_IOIM_SM_DONE: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free); + bfa_reqq_wcancel(&ioim->iosp->reqq_wait); + bfa_ioim_move_to_comp_q(ioim); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort, + ioim); + break; + + case BFA_IOIM_SM_HWFAIL: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_reqq_wcancel(&ioim->iosp->reqq_wait); + bfa_ioim_move_to_comp_q(ioim); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed, + ioim); + break; + + default: + bfa_sm_fault(ioim->bfa, event); + } +} + +/* + * Active IO is being cleaned up, waiting for room in request CQ. + */ +static void +bfa_ioim_sm_cleanup_qfull(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) +{ + bfa_trc(ioim->bfa, ioim->iotag); + bfa_trc(ioim->bfa, event); + + switch (event) { + case BFA_IOIM_SM_QRESUME: + bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup); + bfa_ioim_send_abort(ioim); + break; + + case BFA_IOIM_SM_ABORT: + /* + * IO is already being cleaned up implicitly + */ + ioim->io_cbfn = __bfa_cb_ioim_abort; + break; + + case BFA_IOIM_SM_COMP_GOOD: + case BFA_IOIM_SM_COMP: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_reqq_wcancel(&ioim->iosp->reqq_wait); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim); + bfa_ioim_notify_cleanup(ioim); + break; + + case BFA_IOIM_SM_DONE: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free); + bfa_reqq_wcancel(&ioim->iosp->reqq_wait); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim); + bfa_ioim_notify_cleanup(ioim); + break; + + case BFA_IOIM_SM_HWFAIL: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + bfa_reqq_wcancel(&ioim->iosp->reqq_wait); + bfa_ioim_move_to_comp_q(ioim); + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed, + ioim); + break; + + default: + bfa_sm_fault(ioim->bfa, event); + } +} + +/* + * IO bfa callback is pending. + */ +static void +bfa_ioim_sm_hcb(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) +{ + switch (event) { + case BFA_IOIM_SM_HCB: + bfa_sm_set_state(ioim, bfa_ioim_sm_uninit); + bfa_ioim_free(ioim); + break; + + case BFA_IOIM_SM_CLEANUP: + bfa_ioim_notify_cleanup(ioim); + break; + + case BFA_IOIM_SM_HWFAIL: + break; + + default: + bfa_sm_fault(ioim->bfa, event); + } +} + +/* + * IO bfa callback is pending. IO resource cannot be freed. + */ +static void +bfa_ioim_sm_hcb_free(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) +{ + bfa_trc(ioim->bfa, ioim->iotag); + bfa_trc(ioim->bfa, event); + + switch (event) { + case BFA_IOIM_SM_HCB: + bfa_sm_set_state(ioim, bfa_ioim_sm_resfree); + list_del(&ioim->qe); + list_add_tail(&ioim->qe, &ioim->fcpim->ioim_resfree_q); + break; + + case BFA_IOIM_SM_FREE: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + break; + + case BFA_IOIM_SM_CLEANUP: + bfa_ioim_notify_cleanup(ioim); + break; + + case BFA_IOIM_SM_HWFAIL: + bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); + break; + + default: + bfa_sm_fault(ioim->bfa, event); + } +} + +/* + * IO is completed, waiting resource free from firmware. + */ +static void +bfa_ioim_sm_resfree(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) +{ + bfa_trc(ioim->bfa, ioim->iotag); + bfa_trc(ioim->bfa, event); + + switch (event) { + case BFA_IOIM_SM_FREE: + bfa_sm_set_state(ioim, bfa_ioim_sm_uninit); + bfa_ioim_free(ioim); + break; + + case BFA_IOIM_SM_CLEANUP: + bfa_ioim_notify_cleanup(ioim); + break; + + case BFA_IOIM_SM_HWFAIL: + break; + + default: + bfa_sm_fault(ioim->bfa, event); + } +} + +/* + * This is called from bfa_fcpim_start after the bfa_init() with flash read + * is complete by driver. now invalidate the stale content of lun mask + * like unit attention, rp tag and lp tag. + */ +static void +bfa_ioim_lm_init(struct bfa_s *bfa) +{ + struct bfa_lun_mask_s *lunm_list; + int i; + + if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG) + return; + + lunm_list = bfa_get_lun_mask_list(bfa); + for (i = 0; i < MAX_LUN_MASK_CFG; i++) { + lunm_list[i].ua = BFA_IOIM_LM_UA_RESET; + lunm_list[i].lp_tag = BFA_LP_TAG_INVALID; + lunm_list[i].rp_tag = BFA_RPORT_TAG_INVALID; + } +} + +static void +__bfa_cb_ioim_good_comp(void *cbarg, bfa_boolean_t complete) +{ + struct bfa_ioim_s *ioim = cbarg; + + if (!complete) { + bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB); + return; + } + + bfa_cb_ioim_good_comp(ioim->bfa->bfad, ioim->dio); +} + +static void +__bfa_cb_ioim_comp(void *cbarg, bfa_boolean_t complete) +{ + struct bfa_ioim_s *ioim = cbarg; + struct bfi_ioim_rsp_s *m; + u8 *snsinfo = NULL; + u8 sns_len = 0; + s32 residue = 0; + + if (!complete) { + bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB); + return; + } + + m = (struct bfi_ioim_rsp_s *) &ioim->iosp->comp_rspmsg; + if (m->io_status == BFI_IOIM_STS_OK) { + /* + * setup sense information, if present + */ + if ((m->scsi_status == SCSI_STATUS_CHECK_CONDITION) && + m->sns_len) { + sns_len = m->sns_len; + snsinfo = BFA_SNSINFO_FROM_TAG(ioim->fcpim->fcp, + ioim->iotag); + } + + /* + * setup residue value correctly for normal completions + */ + if (m->resid_flags == FCP_RESID_UNDER) { + residue = be32_to_cpu(m->residue); + bfa_stats(ioim->itnim, iocomp_underrun); + } + if (m->resid_flags == FCP_RESID_OVER) { + residue = be32_to_cpu(m->residue); + residue = -residue; + bfa_stats(ioim->itnim, iocomp_overrun); + } + } + + bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, m->io_status, + m->scsi_status, sns_len, snsinfo, residue); +} + +void +bfa_fcpim_lunmask_rp_update(struct bfa_s *bfa, wwn_t lp_wwn, wwn_t rp_wwn, + u16 rp_tag, u8 lp_tag) +{ + struct bfa_lun_mask_s *lun_list; + u8 i; + + if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG) + return; + + lun_list = bfa_get_lun_mask_list(bfa); + for (i = 0; i < MAX_LUN_MASK_CFG; i++) { + if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE) { + if ((lun_list[i].lp_wwn == lp_wwn) && + (lun_list[i].rp_wwn == rp_wwn)) { + lun_list[i].rp_tag = rp_tag; + lun_list[i].lp_tag = lp_tag; + } + } + } +} + +/* + * set UA for all active luns in LM DB + */ +static void +bfa_ioim_lm_set_ua(struct bfa_s *bfa) +{ + struct bfa_lun_mask_s *lunm_list; + int i; + + lunm_list = bfa_get_lun_mask_list(bfa); + for (i = 0; i < MAX_LUN_MASK_CFG; i++) { + if (lunm_list[i].state != BFA_IOIM_LUN_MASK_ACTIVE) + continue; + lunm_list[i].ua = BFA_IOIM_LM_UA_SET; + } +} + +bfa_status_t +bfa_fcpim_lunmask_update(struct bfa_s *bfa, u32 update) +{ + struct bfa_lunmask_cfg_s *lun_mask; + + bfa_trc(bfa, bfa_get_lun_mask_status(bfa)); + if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG) + return BFA_STATUS_FAILED; + + if (bfa_get_lun_mask_status(bfa) == update) + return BFA_STATUS_NO_CHANGE; + + lun_mask = bfa_get_lun_mask(bfa); + lun_mask->status = update; + + if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) + bfa_ioim_lm_set_ua(bfa); + + return bfa_dconf_update(bfa); +} + +bfa_status_t +bfa_fcpim_lunmask_clear(struct bfa_s *bfa) +{ + int i; + struct bfa_lun_mask_s *lunm_list; + + bfa_trc(bfa, bfa_get_lun_mask_status(bfa)); + if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG) + return BFA_STATUS_FAILED; + + lunm_list = bfa_get_lun_mask_list(bfa); + for (i = 0; i < MAX_LUN_MASK_CFG; i++) { + if (lunm_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE) { + if (lunm_list[i].rp_tag != BFA_RPORT_TAG_INVALID) + bfa_rport_unset_lunmask(bfa, + BFA_RPORT_FROM_TAG(bfa, lunm_list[i].rp_tag)); + } + } + + memset(lunm_list, 0, sizeof(struct bfa_lun_mask_s) * MAX_LUN_MASK_CFG); + return bfa_dconf_update(bfa); +} + +bfa_status_t +bfa_fcpim_lunmask_query(struct bfa_s *bfa, void *buf) +{ + struct bfa_lunmask_cfg_s *lun_mask; + + bfa_trc(bfa, bfa_get_lun_mask_status(bfa)); + if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG) + return BFA_STATUS_FAILED; + + lun_mask = bfa_get_lun_mask(bfa); + memcpy(buf, lun_mask, sizeof(struct bfa_lunmask_cfg_s)); + return BFA_STATUS_OK; +} + +bfa_status_t +bfa_fcpim_lunmask_add(struct bfa_s *bfa, u16 vf_id, wwn_t *pwwn, + wwn_t rpwwn, struct scsi_lun lun) +{ + struct bfa_lun_mask_s *lunm_list; + struct bfa_rport_s *rp = NULL; + int i, free_index = MAX_LUN_MASK_CFG + 1; + struct bfa_fcs_lport_s *port = NULL; + struct bfa_fcs_rport_s *rp_fcs; + + bfa_trc(bfa, bfa_get_lun_mask_status(bfa)); + if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG) + return BFA_STATUS_FAILED; + + port = bfa_fcs_lookup_port(&((struct bfad_s *)bfa->bfad)->bfa_fcs, + vf_id, *pwwn); + if (port) { + *pwwn = port->port_cfg.pwwn; + rp_fcs = bfa_fcs_lport_get_rport_by_pwwn(port, rpwwn); + if (rp_fcs) + rp = rp_fcs->bfa_rport; + } + + lunm_list = bfa_get_lun_mask_list(bfa); + /* if entry exists */ + for (i = 0; i < MAX_LUN_MASK_CFG; i++) { + if (lunm_list[i].state != BFA_IOIM_LUN_MASK_ACTIVE) + free_index = i; + if ((lunm_list[i].lp_wwn == *pwwn) && + (lunm_list[i].rp_wwn == rpwwn) && + (scsilun_to_int((struct scsi_lun *)&lunm_list[i].lun) == + scsilun_to_int((struct scsi_lun *)&lun))) + return BFA_STATUS_ENTRY_EXISTS; + } + + if (free_index > MAX_LUN_MASK_CFG) + return BFA_STATUS_MAX_ENTRY_REACHED; + + if (rp) { + lunm_list[free_index].lp_tag = bfa_lps_get_tag_from_pid(bfa, + rp->rport_info.local_pid); + lunm_list[free_index].rp_tag = rp->rport_tag; + } else { + lunm_list[free_index].lp_tag = BFA_LP_TAG_INVALID; + lunm_list[free_index].rp_tag = BFA_RPORT_TAG_INVALID; + } + + lunm_list[free_index].lp_wwn = *pwwn; + lunm_list[free_index].rp_wwn = rpwwn; + lunm_list[free_index].lun = lun; + lunm_list[free_index].state = BFA_IOIM_LUN_MASK_ACTIVE; + + /* set for all luns in this rp */ + for (i = 0; i < MAX_LUN_MASK_CFG; i++) { + if ((lunm_list[i].lp_wwn == *pwwn) && + (lunm_list[i].rp_wwn == rpwwn)) + lunm_list[i].ua = BFA_IOIM_LM_UA_SET; + } + + return bfa_dconf_update(bfa); +} + +bfa_status_t +bfa_fcpim_lunmask_delete(struct bfa_s *bfa, u16 vf_id, wwn_t *pwwn, + wwn_t rpwwn, struct scsi_lun lun) +{ + struct bfa_lun_mask_s *lunm_list; + struct bfa_rport_s *rp = NULL; + struct bfa_fcs_lport_s *port = NULL; + struct bfa_fcs_rport_s *rp_fcs; + int i; + + /* in min cfg lunm_list could be NULL but no commands should run. */ + if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG) + return BFA_STATUS_FAILED; + + bfa_trc(bfa, bfa_get_lun_mask_status(bfa)); + bfa_trc(bfa, *pwwn); + bfa_trc(bfa, rpwwn); + bfa_trc(bfa, scsilun_to_int((struct scsi_lun *)&lun)); + + if (*pwwn == 0) { + port = bfa_fcs_lookup_port( + &((struct bfad_s *)bfa->bfad)->bfa_fcs, + vf_id, *pwwn); + if (port) { + *pwwn = port->port_cfg.pwwn; + rp_fcs = bfa_fcs_lport_get_rport_by_pwwn(port, rpwwn); + if (rp_fcs) + rp = rp_fcs->bfa_rport; + } + } + + lunm_list = bfa_get_lun_mask_list(bfa); + for (i = 0; i < MAX_LUN_MASK_CFG; i++) { + if ((lunm_list[i].lp_wwn == *pwwn) && + (lunm_list[i].rp_wwn == rpwwn) && + (scsilun_to_int((struct scsi_lun *)&lunm_list[i].lun) == + scsilun_to_int((struct scsi_lun *)&lun))) { + lunm_list[i].lp_wwn = 0; + lunm_list[i].rp_wwn = 0; + int_to_scsilun(0, &lunm_list[i].lun); + lunm_list[i].state = BFA_IOIM_LUN_MASK_INACTIVE; + if (lunm_list[i].rp_tag != BFA_RPORT_TAG_INVALID) { + lunm_list[i].rp_tag = BFA_RPORT_TAG_INVALID; + lunm_list[i].lp_tag = BFA_LP_TAG_INVALID; + } + return bfa_dconf_update(bfa); + } + } + + /* set for all luns in this rp */ + for (i = 0; i < MAX_LUN_MASK_CFG; i++) { + if ((lunm_list[i].lp_wwn == *pwwn) && + (lunm_list[i].rp_wwn == rpwwn)) + lunm_list[i].ua = BFA_IOIM_LM_UA_SET; + } + + return BFA_STATUS_ENTRY_NOT_EXISTS; +} + +static void +__bfa_cb_ioim_failed(void *cbarg, bfa_boolean_t complete) +{ + struct bfa_ioim_s *ioim = cbarg; + + if (!complete) { + bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB); + return; + } + + bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_ABORTED, + 0, 0, NULL, 0); +} + +static void +__bfa_cb_ioim_pathtov(void *cbarg, bfa_boolean_t complete) +{ + struct bfa_ioim_s *ioim = cbarg; + + bfa_stats(ioim->itnim, path_tov_expired); + if (!complete) { + bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB); + return; + } + + bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_PATHTOV, + 0, 0, NULL, 0); +} + +static void +__bfa_cb_ioim_abort(void *cbarg, bfa_boolean_t complete) +{ + struct bfa_ioim_s *ioim = cbarg; + + if (!complete) { + bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB); + return; + } + + bfa_cb_ioim_abort(ioim->bfa->bfad, ioim->dio); +} + +static void +bfa_ioim_sgpg_alloced(void *cbarg) +{ + struct bfa_ioim_s *ioim = cbarg; + + ioim->nsgpgs = BFA_SGPG_NPAGE(ioim->nsges); + list_splice_tail_init(&ioim->iosp->sgpg_wqe.sgpg_q, &ioim->sgpg_q); + ioim->sgpg = bfa_q_first(&ioim->sgpg_q); + bfa_sm_send_event(ioim, BFA_IOIM_SM_SGALLOCED); +} + +/* + * Send I/O request to firmware. + */ +static bfa_boolean_t +bfa_ioim_send_ioreq(struct bfa_ioim_s *ioim) +{ + struct bfa_itnim_s *itnim = ioim->itnim; + struct bfi_ioim_req_s *m; + static struct fcp_cmnd_s cmnd_z0 = { { { 0 } } }; + struct bfi_sge_s *sge, *sgpge; + u32 pgdlen = 0; + u32 fcp_dl; + u64 addr; + struct scatterlist *sg; + struct bfa_sgpg_s *sgpg; + struct scsi_cmnd *cmnd = (struct scsi_cmnd *) ioim->dio; + u32 i, sge_id, pgcumsz; + enum dma_data_direction dmadir; + + /* + * check for room in queue to send request now + */ + m = bfa_reqq_next(ioim->bfa, ioim->reqq); + if (!m) { + bfa_stats(ioim->itnim, qwait); + bfa_reqq_wait(ioim->bfa, ioim->reqq, + &ioim->iosp->reqq_wait); + return BFA_FALSE; + } + + /* + * build i/o request message next + */ + m->io_tag = cpu_to_be16(ioim->iotag); + m->rport_hdl = ioim->itnim->rport->fw_handle; + m->io_timeout = 0; + + sge = &m->sges[0]; + sgpg = ioim->sgpg; + sge_id = 0; + sgpge = NULL; + pgcumsz = 0; + scsi_for_each_sg(cmnd, sg, ioim->nsges, i) { + if (i == 0) { + /* build inline IO SG element */ + addr = bfa_sgaddr_le(sg_dma_address(sg)); + sge->sga = *(union bfi_addr_u *) &addr; + pgdlen = sg_dma_len(sg); + sge->sg_len = pgdlen; + sge->flags = (ioim->nsges > BFI_SGE_INLINE) ? + BFI_SGE_DATA_CPL : BFI_SGE_DATA_LAST; + bfa_sge_to_be(sge); + sge++; + } else { + if (sge_id == 0) + sgpge = sgpg->sgpg->sges; + + addr = bfa_sgaddr_le(sg_dma_address(sg)); + sgpge->sga = *(union bfi_addr_u *) &addr; + sgpge->sg_len = sg_dma_len(sg); + pgcumsz += sgpge->sg_len; + + /* set flags */ + if (i < (ioim->nsges - 1) && + sge_id < (BFI_SGPG_DATA_SGES - 1)) + sgpge->flags = BFI_SGE_DATA; + else if (i < (ioim->nsges - 1)) + sgpge->flags = BFI_SGE_DATA_CPL; + else + sgpge->flags = BFI_SGE_DATA_LAST; + + bfa_sge_to_le(sgpge); + + sgpge++; + if (i == (ioim->nsges - 1)) { + sgpge->flags = BFI_SGE_PGDLEN; + sgpge->sga.a32.addr_lo = 0; + sgpge->sga.a32.addr_hi = 0; + sgpge->sg_len = pgcumsz; + bfa_sge_to_le(sgpge); + } else if (++sge_id == BFI_SGPG_DATA_SGES) { + sgpg = (struct bfa_sgpg_s *) bfa_q_next(sgpg); + sgpge->flags = BFI_SGE_LINK; + sgpge->sga = sgpg->sgpg_pa; + sgpge->sg_len = pgcumsz; + bfa_sge_to_le(sgpge); + sge_id = 0; + pgcumsz = 0; + } + } + } + + if (ioim->nsges > BFI_SGE_INLINE) { + sge->sga = ioim->sgpg->sgpg_pa; + } else { + sge->sga.a32.addr_lo = 0; + sge->sga.a32.addr_hi = 0; + } + sge->sg_len = pgdlen; + sge->flags = BFI_SGE_PGDLEN; + bfa_sge_to_be(sge); + + /* + * set up I/O command parameters + */ + m->cmnd = cmnd_z0; + int_to_scsilun(cmnd->device->lun, &m->cmnd.lun); + dmadir = cmnd->sc_data_direction; + if (dmadir == DMA_TO_DEVICE) + m->cmnd.iodir = FCP_IODIR_WRITE; + else if (dmadir == DMA_FROM_DEVICE) + m->cmnd.iodir = FCP_IODIR_READ; + else + m->cmnd.iodir = FCP_IODIR_NONE; + + m->cmnd.cdb = *(struct scsi_cdb_s *) cmnd->cmnd; + fcp_dl = scsi_bufflen(cmnd); + m->cmnd.fcp_dl = cpu_to_be32(fcp_dl); + + /* + * set up I/O message header + */ + switch (m->cmnd.iodir) { + case FCP_IODIR_READ: + bfi_h2i_set(m->mh, BFI_MC_IOIM_READ, 0, bfa_fn_lpu(ioim->bfa)); + bfa_stats(itnim, input_reqs); + ioim->itnim->stats.rd_throughput += fcp_dl; + break; + case FCP_IODIR_WRITE: + bfi_h2i_set(m->mh, BFI_MC_IOIM_WRITE, 0, bfa_fn_lpu(ioim->bfa)); + bfa_stats(itnim, output_reqs); + ioim->itnim->stats.wr_throughput += fcp_dl; + break; + case FCP_IODIR_RW: + bfa_stats(itnim, input_reqs); + bfa_stats(itnim, output_reqs); + default: + bfi_h2i_set(m->mh, BFI_MC_IOIM_IO, 0, bfa_fn_lpu(ioim->bfa)); + } + if (itnim->seq_rec || + (scsi_bufflen(cmnd) & (sizeof(u32) - 1))) + bfi_h2i_set(m->mh, BFI_MC_IOIM_IO, 0, bfa_fn_lpu(ioim->bfa)); + + /* + * queue I/O message to firmware + */ + bfa_reqq_produce(ioim->bfa, ioim->reqq, m->mh); + return BFA_TRUE; +} + +/* + * Setup any additional SG pages needed.Inline SG element is setup + * at queuing time. + */ +static bfa_boolean_t +bfa_ioim_sgpg_alloc(struct bfa_ioim_s *ioim) +{ + u16 nsgpgs; + + WARN_ON(ioim->nsges <= BFI_SGE_INLINE); + + /* + * allocate SG pages needed + */ + nsgpgs = BFA_SGPG_NPAGE(ioim->nsges); + if (!nsgpgs) + return BFA_TRUE; + + if (bfa_sgpg_malloc(ioim->bfa, &ioim->sgpg_q, nsgpgs) + != BFA_STATUS_OK) { + bfa_sgpg_wait(ioim->bfa, &ioim->iosp->sgpg_wqe, nsgpgs); + return BFA_FALSE; + } + + ioim->nsgpgs = nsgpgs; + ioim->sgpg = bfa_q_first(&ioim->sgpg_q); + + return BFA_TRUE; +} + +/* + * Send I/O abort request to firmware. + */ +static bfa_boolean_t +bfa_ioim_send_abort(struct bfa_ioim_s *ioim) +{ + struct bfi_ioim_abort_req_s *m; + enum bfi_ioim_h2i msgop; + + /* + * check for room in queue to send request now + */ + m = bfa_reqq_next(ioim->bfa, ioim->reqq); + if (!m) + return BFA_FALSE; + + /* + * build i/o request message next + */ + if (ioim->iosp->abort_explicit) + msgop = BFI_IOIM_H2I_IOABORT_REQ; + else + msgop = BFI_IOIM_H2I_IOCLEANUP_REQ; + + bfi_h2i_set(m->mh, BFI_MC_IOIM, msgop, bfa_fn_lpu(ioim->bfa)); + m->io_tag = cpu_to_be16(ioim->iotag); + m->abort_tag = ++ioim->abort_tag; + + /* + * queue I/O message to firmware + */ + bfa_reqq_produce(ioim->bfa, ioim->reqq, m->mh); + return BFA_TRUE; +} + +/* + * Call to resume any I/O requests waiting for room in request queue. + */ +static void +bfa_ioim_qresume(void *cbarg) +{ + struct bfa_ioim_s *ioim = cbarg; + + bfa_stats(ioim->itnim, qresumes); + bfa_sm_send_event(ioim, BFA_IOIM_SM_QRESUME); +} + + +static void +bfa_ioim_notify_cleanup(struct bfa_ioim_s *ioim) +{ + /* + * Move IO from itnim queue to fcpim global queue since itnim will be + * freed. + */ + list_del(&ioim->qe); + list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q); + + if (!ioim->iosp->tskim) { + if (ioim->fcpim->delay_comp && ioim->itnim->iotov_active) { + bfa_cb_dequeue(&ioim->hcb_qe); + list_del(&ioim->qe); + list_add_tail(&ioim->qe, &ioim->itnim->delay_comp_q); + } + bfa_itnim_iodone(ioim->itnim); + } else + bfa_wc_down(&ioim->iosp->tskim->wc); +} + +static bfa_boolean_t +bfa_ioim_is_abortable(struct bfa_ioim_s *ioim) +{ + if ((bfa_sm_cmp_state(ioim, bfa_ioim_sm_uninit) && + (!bfa_q_is_on_q(&ioim->itnim->pending_q, ioim))) || + (bfa_sm_cmp_state(ioim, bfa_ioim_sm_abort)) || + (bfa_sm_cmp_state(ioim, bfa_ioim_sm_abort_qfull)) || + (bfa_sm_cmp_state(ioim, bfa_ioim_sm_hcb)) || + (bfa_sm_cmp_state(ioim, bfa_ioim_sm_hcb_free)) || + (bfa_sm_cmp_state(ioim, bfa_ioim_sm_resfree))) + return BFA_FALSE; + + return BFA_TRUE; +} + +void +bfa_ioim_delayed_comp(struct bfa_ioim_s *ioim, bfa_boolean_t iotov) +{ + /* + * If path tov timer expired, failback with PATHTOV status - these + * IO requests are not normally retried by IO stack. + * + * Otherwise device cameback online and fail it with normal failed + * status so that IO stack retries these failed IO requests. + */ + if (iotov) + ioim->io_cbfn = __bfa_cb_ioim_pathtov; + else { + ioim->io_cbfn = __bfa_cb_ioim_failed; + bfa_stats(ioim->itnim, iocom_nexus_abort); + } + bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim); + + /* + * Move IO to fcpim global queue since itnim will be + * freed. + */ + list_del(&ioim->qe); + list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q); +} + + +/* + * Memory allocation and initialization. + */ +void +bfa_ioim_attach(struct bfa_fcpim_s *fcpim) +{ + struct bfa_ioim_s *ioim; + struct bfa_fcp_mod_s *fcp = fcpim->fcp; + struct bfa_ioim_sp_s *iosp; + u16 i; + + /* + * claim memory first + */ + ioim = (struct bfa_ioim_s *) bfa_mem_kva_curp(fcp); + fcpim->ioim_arr = ioim; + bfa_mem_kva_curp(fcp) = (u8 *) (ioim + fcpim->fcp->num_ioim_reqs); + + iosp = (struct bfa_ioim_sp_s *) bfa_mem_kva_curp(fcp); + fcpim->ioim_sp_arr = iosp; + bfa_mem_kva_curp(fcp) = (u8 *) (iosp + fcpim->fcp->num_ioim_reqs); + + /* + * Initialize ioim free queues + */ + INIT_LIST_HEAD(&fcpim->ioim_resfree_q); + INIT_LIST_HEAD(&fcpim->ioim_comp_q); + + for (i = 0; i < fcpim->fcp->num_ioim_reqs; + i++, ioim++, iosp++) { + /* + * initialize IOIM + */ + memset(ioim, 0, sizeof(struct bfa_ioim_s)); + ioim->iotag = i; + ioim->bfa = fcpim->bfa; + ioim->fcpim = fcpim; + ioim->iosp = iosp; + INIT_LIST_HEAD(&ioim->sgpg_q); + bfa_reqq_winit(&ioim->iosp->reqq_wait, + bfa_ioim_qresume, ioim); + bfa_sgpg_winit(&ioim->iosp->sgpg_wqe, + bfa_ioim_sgpg_alloced, ioim); + bfa_sm_set_state(ioim, bfa_ioim_sm_uninit); + } +} + +void +bfa_ioim_isr(struct bfa_s *bfa, struct bfi_msg_s *m) +{ + struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); + struct bfi_ioim_rsp_s *rsp = (struct bfi_ioim_rsp_s *) m; + struct bfa_ioim_s *ioim; + u16 iotag; + enum bfa_ioim_event evt = BFA_IOIM_SM_COMP; + + iotag = be16_to_cpu(rsp->io_tag); + + ioim = BFA_IOIM_FROM_TAG(fcpim, iotag); + WARN_ON(ioim->iotag != iotag); + + bfa_trc(ioim->bfa, ioim->iotag); + bfa_trc(ioim->bfa, rsp->io_status); + bfa_trc(ioim->bfa, rsp->reuse_io_tag); + + if (bfa_sm_cmp_state(ioim, bfa_ioim_sm_active)) + ioim->iosp->comp_rspmsg = *m; + + switch (rsp->io_status) { + case BFI_IOIM_STS_OK: + bfa_stats(ioim->itnim, iocomp_ok); + if (rsp->reuse_io_tag == 0) + evt = BFA_IOIM_SM_DONE; + else + evt = BFA_IOIM_SM_COMP; + break; + + case BFI_IOIM_STS_TIMEDOUT: + bfa_stats(ioim->itnim, iocomp_timedout); + case BFI_IOIM_STS_ABORTED: + rsp->io_status = BFI_IOIM_STS_ABORTED; + bfa_stats(ioim->itnim, iocomp_aborted); + if (rsp->reuse_io_tag == 0) + evt = BFA_IOIM_SM_DONE; + else + evt = BFA_IOIM_SM_COMP; + break; + + case BFI_IOIM_STS_PROTO_ERR: + bfa_stats(ioim->itnim, iocom_proto_err); + WARN_ON(!rsp->reuse_io_tag); + evt = BFA_IOIM_SM_COMP; + break; + + case BFI_IOIM_STS_SQER_NEEDED: + bfa_stats(ioim->itnim, iocom_sqer_needed); + WARN_ON(rsp->reuse_io_tag != 0); + evt = BFA_IOIM_SM_SQRETRY; + break; + + case BFI_IOIM_STS_RES_FREE: + bfa_stats(ioim->itnim, iocom_res_free); + evt = BFA_IOIM_SM_FREE; + break; + + case BFI_IOIM_STS_HOST_ABORTED: + bfa_stats(ioim->itnim, iocom_hostabrts); + if (rsp->abort_tag != ioim->abort_tag) { + bfa_trc(ioim->bfa, rsp->abort_tag); + bfa_trc(ioim->bfa, ioim->abort_tag); + return; + } + + if (rsp->reuse_io_tag) + evt = BFA_IOIM_SM_ABORT_COMP; + else + evt = BFA_IOIM_SM_ABORT_DONE; + break; + + case BFI_IOIM_STS_UTAG: + bfa_stats(ioim->itnim, iocom_utags); + evt = BFA_IOIM_SM_COMP_UTAG; + break; + + default: + WARN_ON(1); + } + + bfa_sm_send_event(ioim, evt); +} + +void +bfa_ioim_good_comp_isr(struct bfa_s *bfa, struct bfi_msg_s *m) +{ + struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); + struct bfi_ioim_rsp_s *rsp = (struct bfi_ioim_rsp_s *) m; + struct bfa_ioim_s *ioim; + u16 iotag; + + iotag = be16_to_cpu(rsp->io_tag); + + ioim = BFA_IOIM_FROM_TAG(fcpim, iotag); + WARN_ON(ioim->iotag != iotag); + + bfa_ioim_cb_profile_comp(fcpim, ioim); + + bfa_sm_send_event(ioim, BFA_IOIM_SM_COMP_GOOD); +} + +/* + * Called by itnim to clean up IO while going offline. + */ +void +bfa_ioim_cleanup(struct bfa_ioim_s *ioim) +{ + bfa_trc(ioim->bfa, ioim->iotag); + bfa_stats(ioim->itnim, io_cleanups); + + ioim->iosp->tskim = NULL; + bfa_sm_send_event(ioim, BFA_IOIM_SM_CLEANUP); +} + +void +bfa_ioim_cleanup_tm(struct bfa_ioim_s *ioim, struct bfa_tskim_s *tskim) +{ + bfa_trc(ioim->bfa, ioim->iotag); + bfa_stats(ioim->itnim, io_tmaborts); + + ioim->iosp->tskim = tskim; + bfa_sm_send_event(ioim, BFA_IOIM_SM_CLEANUP); +} + +/* + * IOC failure handling. + */ +void +bfa_ioim_iocdisable(struct bfa_ioim_s *ioim) +{ + bfa_trc(ioim->bfa, ioim->iotag); + bfa_stats(ioim->itnim, io_iocdowns); + bfa_sm_send_event(ioim, BFA_IOIM_SM_HWFAIL); +} + +/* + * IO offline TOV popped. Fail the pending IO. + */ +void +bfa_ioim_tov(struct bfa_ioim_s *ioim) +{ + bfa_trc(ioim->bfa, ioim->iotag); + bfa_sm_send_event(ioim, BFA_IOIM_SM_IOTOV); +} + + +/* + * Allocate IOIM resource for initiator mode I/O request. + */ +struct bfa_ioim_s * +bfa_ioim_alloc(struct bfa_s *bfa, struct bfad_ioim_s *dio, + struct bfa_itnim_s *itnim, u16 nsges) +{ + struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); + struct bfa_ioim_s *ioim; + struct bfa_iotag_s *iotag = NULL; + + /* + * alocate IOIM resource + */ + bfa_q_deq(&fcpim->fcp->iotag_ioim_free_q, &iotag); + if (!iotag) { + bfa_stats(itnim, no_iotags); + return NULL; + } + + ioim = BFA_IOIM_FROM_TAG(fcpim, iotag->tag); + + ioim->dio = dio; + ioim->itnim = itnim; + ioim->nsges = nsges; + ioim->nsgpgs = 0; + + bfa_stats(itnim, total_ios); + fcpim->ios_active++; + + list_add_tail(&ioim->qe, &itnim->io_q); + + return ioim; +} + +void +bfa_ioim_free(struct bfa_ioim_s *ioim) +{ + struct bfa_fcpim_s *fcpim = ioim->fcpim; + struct bfa_iotag_s *iotag; + + if (ioim->nsgpgs > 0) + bfa_sgpg_mfree(ioim->bfa, &ioim->sgpg_q, ioim->nsgpgs); + + bfa_stats(ioim->itnim, io_comps); + fcpim->ios_active--; + + ioim->iotag &= BFA_IOIM_IOTAG_MASK; + + WARN_ON(!(ioim->iotag < + (fcpim->fcp->num_ioim_reqs + fcpim->fcp->num_fwtio_reqs))); + iotag = BFA_IOTAG_FROM_TAG(fcpim->fcp, ioim->iotag); + + if (ioim->iotag < fcpim->fcp->num_ioim_reqs) + list_add_tail(&iotag->qe, &fcpim->fcp->iotag_ioim_free_q); + else + list_add_tail(&iotag->qe, &fcpim->fcp->iotag_tio_free_q); + + list_del(&ioim->qe); +} + +void +bfa_ioim_start(struct bfa_ioim_s *ioim) +{ + bfa_ioim_cb_profile_start(ioim->fcpim, ioim); + + /* + * Obtain the queue over which this request has to be issued + */ + ioim->reqq = bfa_fcpim_ioredirect_enabled(ioim->bfa) ? + BFA_FALSE : bfa_itnim_get_reqq(ioim); + + bfa_sm_send_event(ioim, BFA_IOIM_SM_START); +} + +/* + * Driver I/O abort request. + */ +bfa_status_t +bfa_ioim_abort(struct bfa_ioim_s *ioim) +{ + + bfa_trc(ioim->bfa, ioim->iotag); + + if (!bfa_ioim_is_abortable(ioim)) + return BFA_STATUS_FAILED; + + bfa_stats(ioim->itnim, io_aborts); + bfa_sm_send_event(ioim, BFA_IOIM_SM_ABORT); + + return BFA_STATUS_OK; +} + +/* + * BFA TSKIM state machine functions + */ + +/* + * Task management command beginning state. + */ +static void +bfa_tskim_sm_uninit(struct bfa_tskim_s *tskim, enum bfa_tskim_event event) +{ + bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event); + + switch (event) { + case BFA_TSKIM_SM_START: + bfa_sm_set_state(tskim, bfa_tskim_sm_active); + bfa_tskim_gather_ios(tskim); + + /* + * If device is offline, do not send TM on wire. Just cleanup + * any pending IO requests and complete TM request. + */ + if (!bfa_itnim_is_online(tskim->itnim)) { + bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup); + tskim->tsk_status = BFI_TSKIM_STS_OK; + bfa_tskim_cleanup_ios(tskim); + return; + } + + if (!bfa_tskim_send(tskim)) { + bfa_sm_set_state(tskim, bfa_tskim_sm_qfull); + bfa_stats(tskim->itnim, tm_qwait); + bfa_reqq_wait(tskim->bfa, tskim->itnim->reqq, + &tskim->reqq_wait); + } + break; + + default: + bfa_sm_fault(tskim->bfa, event); + } +} + +/* + * TM command is active, awaiting completion from firmware to + * cleanup IO requests in TM scope. + */ +static void +bfa_tskim_sm_active(struct bfa_tskim_s *tskim, enum bfa_tskim_event event) +{ + bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event); + + switch (event) { + case BFA_TSKIM_SM_DONE: + bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup); + bfa_tskim_cleanup_ios(tskim); + break; + + case BFA_TSKIM_SM_CLEANUP: + bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup); + if (!bfa_tskim_send_abort(tskim)) { + bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup_qfull); + bfa_stats(tskim->itnim, tm_qwait); + bfa_reqq_wait(tskim->bfa, tskim->itnim->reqq, + &tskim->reqq_wait); + } + break; + + case BFA_TSKIM_SM_HWFAIL: + bfa_sm_set_state(tskim, bfa_tskim_sm_hcb); + bfa_tskim_iocdisable_ios(tskim); + bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed); + break; + + default: + bfa_sm_fault(tskim->bfa, event); + } +} + +/* + * An active TM is being cleaned up since ITN is offline. Awaiting cleanup + * completion event from firmware. + */ +static void +bfa_tskim_sm_cleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event) +{ + bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event); + + switch (event) { + case BFA_TSKIM_SM_DONE: + /* + * Ignore and wait for ABORT completion from firmware. + */ + break; + + case BFA_TSKIM_SM_UTAG: + case BFA_TSKIM_SM_CLEANUP_DONE: + bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup); + bfa_tskim_cleanup_ios(tskim); + break; + + case BFA_TSKIM_SM_HWFAIL: + bfa_sm_set_state(tskim, bfa_tskim_sm_hcb); + bfa_tskim_iocdisable_ios(tskim); + bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed); + break; + + default: + bfa_sm_fault(tskim->bfa, event); + } +} + +static void +bfa_tskim_sm_iocleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event) +{ + bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event); + + switch (event) { + case BFA_TSKIM_SM_IOS_DONE: + bfa_sm_set_state(tskim, bfa_tskim_sm_hcb); + bfa_tskim_qcomp(tskim, __bfa_cb_tskim_done); + break; + + case BFA_TSKIM_SM_CLEANUP: + /* + * Ignore, TM command completed on wire. + * Notify TM conmpletion on IO cleanup completion. + */ + break; + + case BFA_TSKIM_SM_HWFAIL: + bfa_sm_set_state(tskim, bfa_tskim_sm_hcb); + bfa_tskim_iocdisable_ios(tskim); + bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed); + break; + + default: + bfa_sm_fault(tskim->bfa, event); + } +} + +/* + * Task management command is waiting for room in request CQ + */ +static void +bfa_tskim_sm_qfull(struct bfa_tskim_s *tskim, enum bfa_tskim_event event) +{ + bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event); + + switch (event) { + case BFA_TSKIM_SM_QRESUME: + bfa_sm_set_state(tskim, bfa_tskim_sm_active); + bfa_tskim_send(tskim); + break; + + case BFA_TSKIM_SM_CLEANUP: + /* + * No need to send TM on wire since ITN is offline. + */ + bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup); + bfa_reqq_wcancel(&tskim->reqq_wait); + bfa_tskim_cleanup_ios(tskim); + break; + + case BFA_TSKIM_SM_HWFAIL: + bfa_sm_set_state(tskim, bfa_tskim_sm_hcb); + bfa_reqq_wcancel(&tskim->reqq_wait); + bfa_tskim_iocdisable_ios(tskim); + bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed); + break; + + default: + bfa_sm_fault(tskim->bfa, event); + } +} + +/* + * Task management command is active, awaiting for room in request CQ + * to send clean up request. + */ +static void +bfa_tskim_sm_cleanup_qfull(struct bfa_tskim_s *tskim, + enum bfa_tskim_event event) +{ + bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event); + + switch (event) { + case BFA_TSKIM_SM_DONE: + bfa_reqq_wcancel(&tskim->reqq_wait); + /* + * Fall through !!! + */ + case BFA_TSKIM_SM_QRESUME: + bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup); + bfa_tskim_send_abort(tskim); + break; + + case BFA_TSKIM_SM_HWFAIL: + bfa_sm_set_state(tskim, bfa_tskim_sm_hcb); + bfa_reqq_wcancel(&tskim->reqq_wait); + bfa_tskim_iocdisable_ios(tskim); + bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed); + break; + + default: + bfa_sm_fault(tskim->bfa, event); + } +} + +/* + * BFA callback is pending + */ +static void +bfa_tskim_sm_hcb(struct bfa_tskim_s *tskim, enum bfa_tskim_event event) +{ + bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event); + + switch (event) { + case BFA_TSKIM_SM_HCB: + bfa_sm_set_state(tskim, bfa_tskim_sm_uninit); + bfa_tskim_free(tskim); + break; + + case BFA_TSKIM_SM_CLEANUP: + bfa_tskim_notify_comp(tskim); + break; + + case BFA_TSKIM_SM_HWFAIL: + break; + + default: + bfa_sm_fault(tskim->bfa, event); + } +} + +static void +__bfa_cb_tskim_done(void *cbarg, bfa_boolean_t complete) +{ + struct bfa_tskim_s *tskim = cbarg; + + if (!complete) { + bfa_sm_send_event(tskim, BFA_TSKIM_SM_HCB); + return; + } + + bfa_stats(tskim->itnim, tm_success); + bfa_cb_tskim_done(tskim->bfa->bfad, tskim->dtsk, tskim->tsk_status); +} + +static void +__bfa_cb_tskim_failed(void *cbarg, bfa_boolean_t complete) +{ + struct bfa_tskim_s *tskim = cbarg; + + if (!complete) { + bfa_sm_send_event(tskim, BFA_TSKIM_SM_HCB); + return; + } + + bfa_stats(tskim->itnim, tm_failures); + bfa_cb_tskim_done(tskim->bfa->bfad, tskim->dtsk, + BFI_TSKIM_STS_FAILED); +} + +static bfa_boolean_t +bfa_tskim_match_scope(struct bfa_tskim_s *tskim, struct scsi_lun lun) +{ + switch (tskim->tm_cmnd) { + case FCP_TM_TARGET_RESET: + return BFA_TRUE; + + case FCP_TM_ABORT_TASK_SET: + case FCP_TM_CLEAR_TASK_SET: + case FCP_TM_LUN_RESET: + case FCP_TM_CLEAR_ACA: + return !memcmp(&tskim->lun, &lun, sizeof(lun)); + + default: + WARN_ON(1); + } + + return BFA_FALSE; +} + +/* + * Gather affected IO requests and task management commands. + */ +static void +bfa_tskim_gather_ios(struct bfa_tskim_s *tskim) +{ + struct bfa_itnim_s *itnim = tskim->itnim; + struct bfa_ioim_s *ioim; + struct list_head *qe, *qen; + struct scsi_cmnd *cmnd; + struct scsi_lun scsilun; + + INIT_LIST_HEAD(&tskim->io_q); + + /* + * Gather any active IO requests first. + */ + list_for_each_safe(qe, qen, &itnim->io_q) { + ioim = (struct bfa_ioim_s *) qe; + cmnd = (struct scsi_cmnd *) ioim->dio; + int_to_scsilun(cmnd->device->lun, &scsilun); + if (bfa_tskim_match_scope(tskim, scsilun)) { + list_del(&ioim->qe); + list_add_tail(&ioim->qe, &tskim->io_q); + } + } + + /* + * Failback any pending IO requests immediately. + */ + list_for_each_safe(qe, qen, &itnim->pending_q) { + ioim = (struct bfa_ioim_s *) qe; + cmnd = (struct scsi_cmnd *) ioim->dio; + int_to_scsilun(cmnd->device->lun, &scsilun); + if (bfa_tskim_match_scope(tskim, scsilun)) { + list_del(&ioim->qe); + list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q); + bfa_ioim_tov(ioim); + } + } +} + +/* + * IO cleanup completion + */ +static void +bfa_tskim_cleanp_comp(void *tskim_cbarg) +{ + struct bfa_tskim_s *tskim = tskim_cbarg; + + bfa_stats(tskim->itnim, tm_io_comps); + bfa_sm_send_event(tskim, BFA_TSKIM_SM_IOS_DONE); +} + +/* + * Gather affected IO requests and task management commands. + */ +static void +bfa_tskim_cleanup_ios(struct bfa_tskim_s *tskim) +{ + struct bfa_ioim_s *ioim; + struct list_head *qe, *qen; + + bfa_wc_init(&tskim->wc, bfa_tskim_cleanp_comp, tskim); + + list_for_each_safe(qe, qen, &tskim->io_q) { + ioim = (struct bfa_ioim_s *) qe; + bfa_wc_up(&tskim->wc); + bfa_ioim_cleanup_tm(ioim, tskim); + } + + bfa_wc_wait(&tskim->wc); +} + +/* + * Send task management request to firmware. + */ +static bfa_boolean_t +bfa_tskim_send(struct bfa_tskim_s *tskim) +{ + struct bfa_itnim_s *itnim = tskim->itnim; + struct bfi_tskim_req_s *m; + + /* + * check for room in queue to send request now + */ + m = bfa_reqq_next(tskim->bfa, itnim->reqq); + if (!m) + return BFA_FALSE; + + /* + * build i/o request message next + */ + bfi_h2i_set(m->mh, BFI_MC_TSKIM, BFI_TSKIM_H2I_TM_REQ, + bfa_fn_lpu(tskim->bfa)); + + m->tsk_tag = cpu_to_be16(tskim->tsk_tag); + m->itn_fhdl = tskim->itnim->rport->fw_handle; + m->t_secs = tskim->tsecs; + m->lun = tskim->lun; + m->tm_flags = tskim->tm_cmnd; + + /* + * queue I/O message to firmware + */ + bfa_reqq_produce(tskim->bfa, itnim->reqq, m->mh); + return BFA_TRUE; +} + +/* + * Send abort request to cleanup an active TM to firmware. + */ +static bfa_boolean_t +bfa_tskim_send_abort(struct bfa_tskim_s *tskim) +{ + struct bfa_itnim_s *itnim = tskim->itnim; + struct bfi_tskim_abortreq_s *m; + + /* + * check for room in queue to send request now + */ + m = bfa_reqq_next(tskim->bfa, itnim->reqq); + if (!m) + return BFA_FALSE; + + /* + * build i/o request message next + */ + bfi_h2i_set(m->mh, BFI_MC_TSKIM, BFI_TSKIM_H2I_ABORT_REQ, + bfa_fn_lpu(tskim->bfa)); + + m->tsk_tag = cpu_to_be16(tskim->tsk_tag); + + /* + * queue I/O message to firmware + */ + bfa_reqq_produce(tskim->bfa, itnim->reqq, m->mh); + return BFA_TRUE; +} + +/* + * Call to resume task management cmnd waiting for room in request queue. + */ +static void +bfa_tskim_qresume(void *cbarg) +{ + struct bfa_tskim_s *tskim = cbarg; + + bfa_stats(tskim->itnim, tm_qresumes); + bfa_sm_send_event(tskim, BFA_TSKIM_SM_QRESUME); +} + +/* + * Cleanup IOs associated with a task mangement command on IOC failures. + */ +static void +bfa_tskim_iocdisable_ios(struct bfa_tskim_s *tskim) +{ + struct bfa_ioim_s *ioim; + struct list_head *qe, *qen; + + list_for_each_safe(qe, qen, &tskim->io_q) { + ioim = (struct bfa_ioim_s *) qe; + bfa_ioim_iocdisable(ioim); + } +} + +/* + * Notification on completions from related ioim. + */ +void +bfa_tskim_iodone(struct bfa_tskim_s *tskim) +{ + bfa_wc_down(&tskim->wc); +} + +/* + * Handle IOC h/w failure notification from itnim. + */ +void +bfa_tskim_iocdisable(struct bfa_tskim_s *tskim) +{ + tskim->notify = BFA_FALSE; + bfa_stats(tskim->itnim, tm_iocdowns); + bfa_sm_send_event(tskim, BFA_TSKIM_SM_HWFAIL); +} + +/* + * Cleanup TM command and associated IOs as part of ITNIM offline. + */ +void +bfa_tskim_cleanup(struct bfa_tskim_s *tskim) +{ + tskim->notify = BFA_TRUE; + bfa_stats(tskim->itnim, tm_cleanups); + bfa_sm_send_event(tskim, BFA_TSKIM_SM_CLEANUP); +} + +/* + * Memory allocation and initialization. + */ +void +bfa_tskim_attach(struct bfa_fcpim_s *fcpim) +{ + struct bfa_tskim_s *tskim; + struct bfa_fcp_mod_s *fcp = fcpim->fcp; + u16 i; + + INIT_LIST_HEAD(&fcpim->tskim_free_q); + INIT_LIST_HEAD(&fcpim->tskim_unused_q); + + tskim = (struct bfa_tskim_s *) bfa_mem_kva_curp(fcp); + fcpim->tskim_arr = tskim; + + for (i = 0; i < fcpim->num_tskim_reqs; i++, tskim++) { + /* + * initialize TSKIM + */ + memset(tskim, 0, sizeof(struct bfa_tskim_s)); + tskim->tsk_tag = i; + tskim->bfa = fcpim->bfa; + tskim->fcpim = fcpim; + tskim->notify = BFA_FALSE; + bfa_reqq_winit(&tskim->reqq_wait, bfa_tskim_qresume, + tskim); + bfa_sm_set_state(tskim, bfa_tskim_sm_uninit); + + list_add_tail(&tskim->qe, &fcpim->tskim_free_q); + } + + bfa_mem_kva_curp(fcp) = (u8 *) tskim; +} + +void +bfa_tskim_isr(struct bfa_s *bfa, struct bfi_msg_s *m) +{ + struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); + struct bfi_tskim_rsp_s *rsp = (struct bfi_tskim_rsp_s *) m; + struct bfa_tskim_s *tskim; + u16 tsk_tag = be16_to_cpu(rsp->tsk_tag); + + tskim = BFA_TSKIM_FROM_TAG(fcpim, tsk_tag); + WARN_ON(tskim->tsk_tag != tsk_tag); + + tskim->tsk_status = rsp->tsk_status; + + /* + * Firmware sends BFI_TSKIM_STS_ABORTED status for abort + * requests. All other statuses are for normal completions. + */ + if (rsp->tsk_status == BFI_TSKIM_STS_ABORTED) { + bfa_stats(tskim->itnim, tm_cleanup_comps); + bfa_sm_send_event(tskim, BFA_TSKIM_SM_CLEANUP_DONE); + } else if (rsp->tsk_status == BFI_TSKIM_STS_UTAG) { + bfa_sm_send_event(tskim, BFA_TSKIM_SM_UTAG); + } else { + bfa_stats(tskim->itnim, tm_fw_rsps); + bfa_sm_send_event(tskim, BFA_TSKIM_SM_DONE); + } +} + + +struct bfa_tskim_s * +bfa_tskim_alloc(struct bfa_s *bfa, struct bfad_tskim_s *dtsk) +{ + struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); + struct bfa_tskim_s *tskim; + + bfa_q_deq(&fcpim->tskim_free_q, &tskim); + + if (tskim) + tskim->dtsk = dtsk; + + return tskim; +} + +void +bfa_tskim_free(struct bfa_tskim_s *tskim) +{ + WARN_ON(!bfa_q_is_on_q_func(&tskim->itnim->tsk_q, &tskim->qe)); + list_del(&tskim->qe); + list_add_tail(&tskim->qe, &tskim->fcpim->tskim_free_q); +} + +/* + * Start a task management command. + * + * @param[in] tskim BFA task management command instance + * @param[in] itnim i-t nexus for the task management command + * @param[in] lun lun, if applicable + * @param[in] tm_cmnd Task management command code. + * @param[in] t_secs Timeout in seconds + * + * @return None. + */ +void +bfa_tskim_start(struct bfa_tskim_s *tskim, struct bfa_itnim_s *itnim, + struct scsi_lun lun, + enum fcp_tm_cmnd tm_cmnd, u8 tsecs) +{ + tskim->itnim = itnim; + tskim->lun = lun; + tskim->tm_cmnd = tm_cmnd; + tskim->tsecs = tsecs; + tskim->notify = BFA_FALSE; + bfa_stats(itnim, tm_cmnds); + + list_add_tail(&tskim->qe, &itnim->tsk_q); + bfa_sm_send_event(tskim, BFA_TSKIM_SM_START); +} + +void +bfa_tskim_res_recfg(struct bfa_s *bfa, u16 num_tskim_fw) +{ + struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); + struct list_head *qe; + int i; + + for (i = 0; i < (fcpim->num_tskim_reqs - num_tskim_fw); i++) { + bfa_q_deq_tail(&fcpim->tskim_free_q, &qe); + list_add_tail(qe, &fcpim->tskim_unused_q); + } +} + +/* BFA FCP module - parent module for fcpim */ + +BFA_MODULE(fcp); + +static void +bfa_fcp_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *minfo, + struct bfa_s *bfa) +{ + struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa); + struct bfa_mem_kva_s *fcp_kva = BFA_MEM_FCP_KVA(bfa); + struct bfa_mem_dma_s *seg_ptr; + u16 nsegs, idx, per_seg_ios, num_io_req; + u32 km_len = 0; + + /* + * ZERO for num_ioim_reqs and num_fwtio_reqs is allowed config value. + * So if the values are non zero, adjust them appropriately. + */ + if (cfg->fwcfg.num_ioim_reqs && + cfg->fwcfg.num_ioim_reqs < BFA_IOIM_MIN) + cfg->fwcfg.num_ioim_reqs = BFA_IOIM_MIN; + else if (cfg->fwcfg.num_ioim_reqs > BFA_IOIM_MAX) + cfg->fwcfg.num_ioim_reqs = BFA_IOIM_MAX; + + if (cfg->fwcfg.num_fwtio_reqs > BFA_FWTIO_MAX) + cfg->fwcfg.num_fwtio_reqs = BFA_FWTIO_MAX; + + num_io_req = (cfg->fwcfg.num_ioim_reqs + cfg->fwcfg.num_fwtio_reqs); + if (num_io_req > BFA_IO_MAX) { + if (cfg->fwcfg.num_ioim_reqs && cfg->fwcfg.num_fwtio_reqs) { + cfg->fwcfg.num_ioim_reqs = BFA_IO_MAX/2; + cfg->fwcfg.num_fwtio_reqs = BFA_IO_MAX/2; + } else if (cfg->fwcfg.num_fwtio_reqs) + cfg->fwcfg.num_fwtio_reqs = BFA_FWTIO_MAX; + else + cfg->fwcfg.num_ioim_reqs = BFA_IOIM_MAX; + } + + bfa_fcpim_meminfo(cfg, &km_len); + + num_io_req = (cfg->fwcfg.num_ioim_reqs + cfg->fwcfg.num_fwtio_reqs); + km_len += num_io_req * sizeof(struct bfa_iotag_s); + km_len += cfg->fwcfg.num_rports * sizeof(struct bfa_itn_s); + + /* dma memory */ + nsegs = BFI_MEM_DMA_NSEGS(num_io_req, BFI_IOIM_SNSLEN); + per_seg_ios = BFI_MEM_NREQS_SEG(BFI_IOIM_SNSLEN); + + bfa_mem_dma_seg_iter(fcp, seg_ptr, nsegs, idx) { + if (num_io_req >= per_seg_ios) { + num_io_req -= per_seg_ios; + bfa_mem_dma_setup(minfo, seg_ptr, + per_seg_ios * BFI_IOIM_SNSLEN); + } else + bfa_mem_dma_setup(minfo, seg_ptr, + num_io_req * BFI_IOIM_SNSLEN); + } + + /* kva memory */ + bfa_mem_kva_setup(minfo, fcp_kva, km_len); +} + +static void +bfa_fcp_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg, + struct bfa_pcidev_s *pcidev) +{ + struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa); + struct bfa_mem_dma_s *seg_ptr; + u16 idx, nsegs, num_io_req; + + fcp->max_ioim_reqs = cfg->fwcfg.num_ioim_reqs; + fcp->num_ioim_reqs = cfg->fwcfg.num_ioim_reqs; + fcp->num_fwtio_reqs = cfg->fwcfg.num_fwtio_reqs; + fcp->num_itns = cfg->fwcfg.num_rports; + fcp->bfa = bfa; + + /* + * Setup the pool of snsbase addr's, that is passed to fw as + * part of bfi_iocfc_cfg_s. + */ + num_io_req = (cfg->fwcfg.num_ioim_reqs + cfg->fwcfg.num_fwtio_reqs); + nsegs = BFI_MEM_DMA_NSEGS(num_io_req, BFI_IOIM_SNSLEN); + + bfa_mem_dma_seg_iter(fcp, seg_ptr, nsegs, idx) { + + if (!bfa_mem_dma_virt(seg_ptr)) + break; + + fcp->snsbase[idx].pa = bfa_mem_dma_phys(seg_ptr); + fcp->snsbase[idx].kva = bfa_mem_dma_virt(seg_ptr); + bfa_iocfc_set_snsbase(bfa, idx, fcp->snsbase[idx].pa); + } + + fcp->throttle_update_required = 1; + bfa_fcpim_attach(fcp, bfad, cfg, pcidev); + + bfa_iotag_attach(fcp); + + fcp->itn_arr = (struct bfa_itn_s *) bfa_mem_kva_curp(fcp); + bfa_mem_kva_curp(fcp) = (u8 *)fcp->itn_arr + + (fcp->num_itns * sizeof(struct bfa_itn_s)); + memset(fcp->itn_arr, 0, + (fcp->num_itns * sizeof(struct bfa_itn_s))); +} + +static void +bfa_fcp_detach(struct bfa_s *bfa) +{ +} + +static void +bfa_fcp_start(struct bfa_s *bfa) +{ + struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa); + + /* + * bfa_init() with flash read is complete. now invalidate the stale + * content of lun mask like unit attention, rp tag and lp tag. + */ + bfa_ioim_lm_init(fcp->bfa); +} + +static void +bfa_fcp_stop(struct bfa_s *bfa) +{ +} + +static void +bfa_fcp_iocdisable(struct bfa_s *bfa) +{ + struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa); + + bfa_fcpim_iocdisable(fcp); +} + +void +bfa_fcp_res_recfg(struct bfa_s *bfa, u16 num_ioim_fw, u16 max_ioim_fw) +{ + struct bfa_fcp_mod_s *mod = BFA_FCP_MOD(bfa); + struct list_head *qe; + int i; + + /* Update io throttle value only once during driver load time */ + if (!mod->throttle_update_required) + return; + + for (i = 0; i < (mod->num_ioim_reqs - num_ioim_fw); i++) { + bfa_q_deq_tail(&mod->iotag_ioim_free_q, &qe); + list_add_tail(qe, &mod->iotag_unused_q); + } + + if (mod->num_ioim_reqs != num_ioim_fw) { + bfa_trc(bfa, mod->num_ioim_reqs); + bfa_trc(bfa, num_ioim_fw); + } + + mod->max_ioim_reqs = max_ioim_fw; + mod->num_ioim_reqs = num_ioim_fw; + mod->throttle_update_required = 0; +} + +void +bfa_itn_create(struct bfa_s *bfa, struct bfa_rport_s *rport, + void (*isr)(struct bfa_s *bfa, struct bfi_msg_s *m)) +{ + struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa); + struct bfa_itn_s *itn; + + itn = BFA_ITN_FROM_TAG(fcp, rport->rport_tag); + itn->isr = isr; +} + +/* + * Itn interrupt processing. + */ +void +bfa_itn_isr(struct bfa_s *bfa, struct bfi_msg_s *m) +{ + struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa); + union bfi_itn_i2h_msg_u msg; + struct bfa_itn_s *itn; + + msg.msg = m; + itn = BFA_ITN_FROM_TAG(fcp, msg.create_rsp->bfa_handle); + + if (itn->isr) + itn->isr(bfa, m); + else + WARN_ON(1); +} + +void +bfa_iotag_attach(struct bfa_fcp_mod_s *fcp) +{ + struct bfa_iotag_s *iotag; + u16 num_io_req, i; + + iotag = (struct bfa_iotag_s *) bfa_mem_kva_curp(fcp); + fcp->iotag_arr = iotag; + + INIT_LIST_HEAD(&fcp->iotag_ioim_free_q); + INIT_LIST_HEAD(&fcp->iotag_tio_free_q); + INIT_LIST_HEAD(&fcp->iotag_unused_q); + + num_io_req = fcp->num_ioim_reqs + fcp->num_fwtio_reqs; + for (i = 0; i < num_io_req; i++, iotag++) { + memset(iotag, 0, sizeof(struct bfa_iotag_s)); + iotag->tag = i; + if (i < fcp->num_ioim_reqs) + list_add_tail(&iotag->qe, &fcp->iotag_ioim_free_q); + else + list_add_tail(&iotag->qe, &fcp->iotag_tio_free_q); + } + + bfa_mem_kva_curp(fcp) = (u8 *) iotag; +} + + +/** + * To send config req, first try to use throttle value from flash + * If 0, then use driver parameter + * We need to use min(flash_val, drv_val) because + * memory allocation was done based on this cfg'd value + */ +u16 +bfa_fcpim_get_throttle_cfg(struct bfa_s *bfa, u16 drv_cfg_param) +{ + u16 tmp; + struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa); + + /* + * If throttle value from flash is already in effect after driver is + * loaded then until next load, always return current value instead + * of actual flash value + */ + if (!fcp->throttle_update_required) + return (u16)fcp->num_ioim_reqs; + + tmp = bfa_dconf_read_data_valid(bfa) ? bfa_fcpim_read_throttle(bfa) : 0; + if (!tmp || (tmp > drv_cfg_param)) + tmp = drv_cfg_param; + + return tmp; +} + +bfa_status_t +bfa_fcpim_write_throttle(struct bfa_s *bfa, u16 value) +{ + if (!bfa_dconf_get_min_cfg(bfa)) { + BFA_DCONF_MOD(bfa)->dconf->throttle_cfg.value = value; + BFA_DCONF_MOD(bfa)->dconf->throttle_cfg.is_valid = 1; + return BFA_STATUS_OK; + } + + return BFA_STATUS_FAILED; +} + +u16 +bfa_fcpim_read_throttle(struct bfa_s *bfa) +{ + struct bfa_throttle_cfg_s *throttle_cfg = + &(BFA_DCONF_MOD(bfa)->dconf->throttle_cfg); + + return ((!bfa_dconf_get_min_cfg(bfa)) ? + ((throttle_cfg->is_valid == 1) ? (throttle_cfg->value) : 0) : 0); +} + +bfa_status_t +bfa_fcpim_throttle_set(struct bfa_s *bfa, u16 value) +{ + /* in min cfg no commands should run. */ + if ((bfa_dconf_get_min_cfg(bfa) == BFA_TRUE) || + (!bfa_dconf_read_data_valid(bfa))) + return BFA_STATUS_FAILED; + + bfa_fcpim_write_throttle(bfa, value); + + return bfa_dconf_update(bfa); +} + +bfa_status_t +bfa_fcpim_throttle_get(struct bfa_s *bfa, void *buf) +{ + struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); + struct bfa_defs_fcpim_throttle_s throttle; + + if ((bfa_dconf_get_min_cfg(bfa) == BFA_TRUE) || + (!bfa_dconf_read_data_valid(bfa))) + return BFA_STATUS_FAILED; + + memset(&throttle, 0, sizeof(struct bfa_defs_fcpim_throttle_s)); + + throttle.cur_value = (u16)(fcpim->fcp->num_ioim_reqs); + throttle.cfg_value = bfa_fcpim_read_throttle(bfa); + if (!throttle.cfg_value) + throttle.cfg_value = throttle.cur_value; + throttle.max_value = (u16)(fcpim->fcp->max_ioim_reqs); + memcpy(buf, &throttle, sizeof(struct bfa_defs_fcpim_throttle_s)); + + return BFA_STATUS_OK; +} |